Flora of Ohio

This list includes plants native and introduced to the state of Ohio, designated (N) and (I), respectively. Varieties and subspecies link to their parent species.

A

*"Abies balsamea" var. "balsamea" (N)
*"Abutilon theophrasti" (I)
*"Acalypha deamii" (N)
*"Acalypha gracilens" (N)
*"Acalypha ostryifolia" (N)
*"Acalypha rhomboidea" (N)
*"Acalypha virginica" (N)
*"Acer campestre" (I)
*"Acer × freemanii" (N)
*"Acer ginnala" (I)
*"Acer negundo" var. "negundo" (N)
*"Acer negundo" var. "violaceum" (N)
*"Acer nigrum" (N)
*"Acer palmatum" (I)
*"Acer pensylvanicum" (N)
*"Acer platanoides" (I)
*"Acer rubrum" var. "rubrum" (N)
*"Acer rubrum" var. "trilobum" (N)
*"Acer saccharinum" (N)
*"Acer saccharum" var. "saccharum" (N)
*"Acer spicatum" (N)
*"Acer tataricum" (I)
*"Achillea millefolium" var. "occidentalis" (N)
*"Achillea millefolium" var. "millefolium" (I)
*"Achillea ptarmica" (I)
*"Achyranthes japonica" var. "hachijoensis" (I)
*"Acinos arvensis" (I)
*"Aconitum noveboracense" (N)
*"Aconitum uncinatum" ssp. "uncinatum" (N)
*"Acorus americanus" (N)
*"Acorus calamus" (I)
*"Acroptilon repens" (I)
*"Actaea pachypoda" (N)
*"Actaea racemosa" var. "racemosa" (N)
*"Actaea rubra" ssp. "rubra" (N)
*"Actinidia arguta" (I)
*"Adiantum capillus-veneris" (N)
*"Adiantum pedatum" (N)
*"Adlumia fungosa" (N)
*"Aegilops cylindrica" (I)
*"Aegopodium podagraria" (I)
*"Aesculus flava" (N)
*"Aesculus glabra" var. "glabra" (N)
*"Aesculus hippocastanum" (I)
*"Aesculus × marylandica" (N)
*"Aethusa cynapium" (I)
*"Agalinis auriculata" (N)
*"Agalinis gattingeri" (N)
*"Agalinis paupercula" var. "borealis" (N)
*"Agalinis paupercula" var. "paupercula" (N)
*"Agalinis purpurea" (N)
*"Agalinis skinneriana" (N)
*"Agalinis tenuifolia" var. "macrophylla" (N)
*"Agalinis tenuifolia" var. "parviflora" (N)
*"Agalinis tenuifolia" var. "tenuifolia" (N)
*"Agastache nepetoides" (N)
*"Agastache scrophulariifolia" (N)
*"Ageratina altissima" var. "altissima" (N)
*"Ageratina aromatica" var. "aromatica" (N)
*"Agrimonia eupatoria" (I)
*"Agrimonia gryposepala" (N)
*"Agrimonia microcarpa" (N)
*"Agrimonia parviflora" (N)
*"Agrimonia pubescens" (N)
*"Agrimonia rostellata" (N)
*"Agrimonia striata" (N)
*"Agropyron desertorum" (I)
*"Agrostemma githago" (I)
*"Agrostis avenacea" (I)
*"Agrostis capillaris" (I)
*"Agrostis elliottiana" (N)
*"Agrostis gigantea" (I)
*"Agrostis hyemalis" (N)
*"Agrostis perennans" (N)
*"Agrostis scabra" (N)
*"Agrostis stolonifera" (I)
*"Ailanthus altissima" (I)
*"Aira caryophyllea" var. "caryophyllea" (I)
*"Ajuga genevensis" (I)
*"Ajuga reptans" (I)
*"Akebia quinata" (I)
*"Albizia julibrissin" (I)
*"Alcea rosea" (I)
*"Aletris farinosa" (N)
*"Alisma subcordatum" (N)
*"Alisma triviale" (N)
*"Alliaria petiolata" (I)
*"Allium ampeloprasum" (I)
*"Allium burdickii" (N)
*"Allium canadense" var. "canadense" (N)
*"Allium cepa" (I)
*"Allium cernuum" var. "cernuum" (N)
*"Allium porrum" (I)
*"Allium sativum" (I)
*"Allium schoenoprasum" (I)
*"Allium schoenoprasum" var. "sibiricum" (N)
*"Allium tricoccum" (N)
*"Allium vineale" ssp. "vineale" (I)
*"Alnus × fallacina" (N)
*"Alnus glutinosa" (I)
*"Alnus incana" ssp. "rugosa" (N)
*"Alnus serrulata" (N)
*"Alopecurus aequalis" var. "aequalis" (N)
*"Alopecurus carolinianus" (N)
*"Alopecurus geniculatus" var. "geniculatus" (I)
*"Alopecurus myosuroides" (I)
*"Alopecurus myosuroides" (N)
*"Alopecurus pratensis" (I)
*"Althaea officinalis" (I)
*"Alyssum alyssoides" (I)
*"Amaranthus albus" (I)
*"Amaranthus blitoides" (I)
*"Amaranthus blitum" var. "emarginatus" (I)
*"Amaranthus cruentus" (I)
*"Amaranthus deflexus" (I)
*"Amaranthus hybridus" (N)
*"Amaranthus palmeri" (N)
*"Amaranthus powellii" ssp. "powellii" (N)
*"Amaranthus retroflexus" (N)
*"Amaranthus spinosus" (N)
*"Amaranthus tuberculatus" (N)
*"Ambrosia artemisiifolia" var. "elatior" (N)
*"Ambrosia artemisiifolia" var. "elatior" (I)
*"Ambrosia bidentata" (N)
*"Ambrosia × helenae" (N)
*"Ambrosia trifida" var. "trifida" (N)
*"Amelanchier arborea" var. "arborea" (N)
*"Amelanchier interior" (N)
*"Amelanchier laevis" (N)
*"Amelanchier sanguinea" var. "sanguinea" (N)
*"Amelanchier stolonifera" (N)
*"Ammannia coccinea" (N)
*"Ammannia robusta" (N)
*"Ammophila breviligulata" (N)
*"Amorpha fruticosa" (N)
*"Ampelopsis aconitifolia" (I)
*"Ampelopsis arborea" (N)
*"Ampelopsis brevipedunculata" (I)
*"Ampelopsis cordata" (N)
*"Amphiachyris dracunculoides" (N)
*"Amphicarpaea bracteata" var. "bracteata" (N)
*"Amphicarpaea bracteata" var. "comosa" (N)
*"Amsinckia lycopsoides" (N)
*"Amsonia tabernaemontana" var. "salicifolia" (N)
*"Anagallis arvensis" ssp. "foemina" (N)
*"Anagallis arvensis" ssp. "arvensis" (I)
*"Anagallis arvensis" ssp. "foemina" (I)
*"Anagallis minima" (N)
*"Anaphalis margaritacea" (N)
*"Anchusa arvensis" (I)
*"Anchusa azurea" (I)
*"Anchusa officinalis" (I)
*"Andromeda polifolia" var. "glaucophylla" (N)
*"Andropogon gerardii" (N)
*"Andropogon glomeratus" var. "glomeratus" (N)
*"Andropogon gyrans" var. "gyrans" (N)
*"Andropogon virginicus" var. "virginicus" (N)
*"Androsace occidentalis" (N)
*"Anemone blanda" (I)
*"Anemone canadensis" (N)
*"Anemone cylindrica" (N)
*"Anemone quinquefolia" var. "bifolia" (N)
*"Anemone quinquefolia" var. "quinquefolia" (N)
*"Anemone virginiana" var. "virginiana" (N)
*"Anethum graveolens" (I)
*"Angelica atropurpurea" (N)
*"Angelica venenosa" (N)
*"Anoda cristata" (N)
*"Antennaria howellii" ssp. "canadensis" (N)
*"Antennaria howellii" ssp. "neodioica" (N)
*"Antennaria howellii" ssp. "petaloidea" (N)
*"Antennaria neglecta" (N)
*"Antennaria parlinii" ssp. "fallax" (N)
*"Antennaria parlinii" ssp. "parlinii" (N)
*"Antennaria plantaginifolia" (N)
*"Antennaria solitaria" (N)
*"Antennaria virginica" (N)
*"Anthemis arvensis" (I)
*"Anthemis cotula" (I)
*"Anthemis tinctoria" (I)
*"Anthoxanthum aristatum" (I)
*"Anthoxanthum odoratum" ssp. "odoratum" (I)
*"Anthriscus caucalis" (I)
*"Anthriscus sylvestris" (I)
*"Anthyllis vulneraria" (I)
*"Antirrhinum majus" (I)
*"Apera interrupta" (I)
*"Apera spica-venti" (I)
*"Apios americana" (N)
*"Apium graveolens" var. "dulce" (N)
*"Apium graveolens" var. "dulce" (I)
*"Aplectrum hyemale" (N)
*"Apocynum androsaemifolium" (N)
*"Apocynum cannabinum" (N)
*"Apocynum × floribundum" (N)
*"Aquilegia canadensis" (N)
*"Aquilegia vulgaris" (I)
*"Arabidopsis thaliana" (I)
*"Arabis canadensis" (N)
*"Arabis × divaricarpa" (N)
*"Arabis drummondii" (N)
*"Arabis glabra" (N)
*"Arabis hirsuta" var. "pycnocarpa" (N)
*"Arabis laevigata" var. "laevigata" (N)
*"Arabis lyrata" (N)
*"Arabis missouriensis" (N)
*"Arabis patens" (N)
*"Arabis shortii" (N)
*"Aralia elata" (I)
*"Aralia hispida" (N)
*"Aralia nudicaulis" (N)
*"Aralia racemosa" ssp. "racemosa" (N)
*"Aralia spinosa" (N)
*"Arctium lappa" (I)
*"Arctium minus" (I)
*"Arctostaphylos uva-ursi" (N)
*"Arenaria serpyllifolia" (I)
*"Arethusa bulbosa" (N)
*"Argemone albiflora" ssp. "albiflora" (N)
*"Argemone mexicana" (N)
*"Argentina anserina" (N)
*"Arisaema dracontium" (N)
*"Arisaema triphyllum" ssp. "pusillum" (N)
*"Arisaema triphyllum" ssp. "stewardsonii" (N)
*"Arisaema triphyllum" ssp. "triphyllum" (N)
*"Aristida dichotoma" var. "dichotoma" (N)
*"Aristida longespica" var. "geniculata" (N)
*"Aristida longespica" var. "longespica" (N)
*"Aristida oligantha" (N)
*"Aristida purpurascens" var. "purpurascens" (N)
*"Aristida ramosissima" (N)
*"Aristolochia clematitis" (I)
*"Aristolochia serpentaria" (N)
*"Aristolochia tomentosa" (N)
*"Armoracia rusticana" (I)
*"Arnoglossum atriplicifolium" (N)
*"Arnoglossum plantagineum" (N)
*"Arnoglossum reniforme" (N)
*"Arnoseris minima" (I)
*"Arrhenatherum elatius" var. "elatius" (I)
*"Artemisia absinthium" (I)
*"Artemisia annua" (I)
*"Artemisia biennis" (N)
*"Artemisia biennis" var. "biennis" (I)
*"Artemisia campestris" ssp. "borealis" var. "borealis" (N)
*"Artemisia campestris" ssp. "caudata" (N)
*"Artemisia gmelinii" (I)
*"Artemisia ludoviciana" ssp. "albula" (N)
*"Artemisia ludoviciana" ssp. "ludoviciana" (N)
*"Artemisia pontica" (I)
*"Artemisia stelleriana" (I)
*"Artemisia stelleriana" (N)
*"Artemisia vulgaris" (N)
*"Artemisia vulgaris" var. "vulgaris" (I)
*"Arthraxon hispidus" (I)
*"Aruncus dioicus" (I)
*"Aruncus dioicus" var. "dioicus" (N)
*"Arundinaria gigantea" ssp. "gigantea" (N)
*"Asarum canadense" (N)
*"Asclepias amplexicaulis" (N)
*"Asclepias exaltata" (N)
*"Asclepias hirtella" (N)
*"Asclepias incarnata" ssp. "incarnata" (N)
*"Asclepias purpurascens" (N)
*"Asclepias quadrifolia" (N)
*"Asclepias sullivantii" (N)
*"Asclepias syriaca" (N)
*"Asclepias tuberosa" ssp. "interior" (N)
*"Asclepias tuberosa" ssp. "tuberosa" (N)
*"Asclepias variegata" (N)
*"Asclepias verticillata" (N)
*"Asclepias viridiflora" (N)
*"Asclepias viridis" (N)
*"Asimina triloba" (N)
*"Asparagus officinalis" (I)
*"Asperugo procumbens" (I)
*"Asplenium bradleyi" (N)
*"Asplenium × clermontiae" (N)
*"Asplenium × ebenoides" (N)
*"Asplenium × gravesii" (N)
*"Asplenium × inexpectatum" (N)
*"Asplenium × kentuckiense" (N)
*"Asplenium montanum" (N)
*"Asplenium pinnatifidum" (N)
*"Asplenium platyneuron" var. "platyneuron" (N)
*"Asplenium resiliens" (N)
*"Asplenium rhizophyllum" (N)
*"Asplenium ruta-muraria" var. "cryptolepis" (N)
*"Asplenium ruta-muraria" var. "lanceolum" (N)
*"Asplenium trichomanes" ssp. "quadrivalens" (N)
*"Asplenium trichomanes" ssp. "trichomanes" (N)
*"Asplenium × trudellii" (N)
*"Aster tataricus" (I)
*"Astragalus canadensis" var. "canadensis" (N)
*"Astragalus neglectus" (N)
*"Athyrium filix-femina" ssp. "angustum" (N)
*"Athyrium filix-femina" ssp. "asplenioides" (N)
*"Atriplex hortensis" (I)
*"Atriplex patula" (I)
*"Atriplex prostrata" (N)
*"Atriplex rosea" (I)
*"Aureolaria flava" var. "flava" (N)
*"Aureolaria flava" var. "macrantha" (N)
*"Aureolaria laevigata" (N)
*"Aureolaria pedicularia" var. "ambigens" (N)
*"Aureolaria pedicularia" var. "pedicularia" (N)
*"Aureolaria virginica" (N)
*"Aurinia saxatilis" (I)
*"Avena fatua" (I)
*"Avena sativa" (I)
*"Azolla caroliniana" (N)

B

*"Ballota nigra" var. "alba" (I)
*"Baptisia alba" var. "macrophylla" (N)
*"Baptisia australis" var. "australis" (N)
*"Baptisia tinctoria" (N)
*"Barbarea verna" (I)
*"Barbarea vulgaris" (I)
*"Bartonia virginica" (N)
*"Bassia hirsuta" (I)
*"Bassia scoparia" (I)
*"Beckmannia syzigachne" (N)
*"Belamcanda chinensis" (I)
*"Bellis perennis" (I)
*"Berberis × ottawensis" (N)
*"Berberis thunbergii" (I)
*"Berberis vulgaris" (I)
*"Berteroa incana" (I)
*"Besseya bullii" (N)
*"Betula alleghaniensis" var. "alleghaniensis" (N)
*"Betula alleghaniensis" var. "macrolepis" (N)
*"Betula lenta" (N)
*"Betula nigra" (N)
*"Betula papyrifera" var. "papyrifera" (N)
*"Betula pendula" (I)
*"Betula populifolia" (N)
*"Betula pubescens" (N)
*"Betula pubescens" ssp. "pubescens" (I)
*"Betula pumila" var. "pumila" (N)
*"Betula × purpusii" (N)
*"Bidens aristosa" (N)
*"Bidens beckii" (N)
*"Bidens bipinnata" (N)
*"Bidens cernua" (N)
*"Bidens connata" (N)
*"Bidens coronata" (N)
*"Bidens discoidea" (N)
*"Bidens frondosa" (N)
*"Bidens laevis" (N)
*"Bidens tripartita" (N)
*"Bidens vulgata" (N)
*"Bignonia capreolata" (N)
*"Blephilia ciliata" (N)
*"Blephilia hirsuta" var. "hirsuta" (N)
*"Boehmeria cylindrica" (N)
*"Boltonia asteroides" var. "recognita" (N)
*"Borago officinalis" (I)
*"Botrychium biternatum" (N)
*"Botrychium dissectum" (N)
*"Botrychium lanceolatum" var. "angustisegmentum" (N)
*"Botrychium matricariifolium" (N)
*"Botrychium multifidum" (N)
*"Botrychium oneidense" (N)
*"Botrychium simplex" (N)
*"Botrychium virginianum" (N)
*"Bouteloua curtipendula" var. "curtipendula" (N)
*"Bouteloua gracilis" (N)
*"Bouteloua hirsuta" var. "hirsuta" (N)
*"Brachyelytrum erectum" (N)
*"Brasenia schreberi" (N)
*"Brassica juncea" (I)
*"Brassica napus" (I)
*"Brassica nigra" (I)
*"Brassica oleracea" (I)
*"Brassica rapa" var. "amplexicaulis" (I)
*"Brassica rapa" var. "rapa" (I)
*"Brickellia eupatorioides" var. "corymbulosa" (N)
*"Brickellia eupatorioides" var. "eupatorioides" (N)
*"Bromus arvensis" (I)
*"Bromus briziformis" (I)
*"Bromus catharticus" (I)
*"Bromus ciliatus" var. "ciliatus" (N)
*"Bromus erectus" (I)
*"Bromus hordeaceus" ssp. "hordeaceus" (I)
*"Bromus inermis" (N)
*"Bromus inermis" ssp. "inermis" var. "inermis" (I)
*"Bromus kalmii" (N)
*"Bromus latiglumis" (N)
*"Bromus nottowayanus" (N)
*"Bromus pubescens" (N)
*"Bromus racemosus" (I)
*"Bromus secalinus" var. "secalinus" (I)
*"Bromus sterilis" (I)
*"Bromus tectorum" (I)
*"Broussonetia papyrifera" (I)
*"Browallia americana" (I)
*"Brunnera macrophylla" (I)
*"Buchnera americana" (N)
*"Buddleja davidii" (I)
*"Buglossoides arvensis" (I)
*"Bulbostylis capillaris" ssp. "capillaris" (N)
*"Bunias orientalis" (I)
*"Bupleurum lancifolium" (I)
*"Bupleurum rotundifolium" (I)
*"Butomus umbellatus" (I)
*"Buxus sempervirens" (I)

C

*"Cabomba caroliniana" var. "caroliniana" (N)
*"Cakile edentula" ssp. "edentula" var. "lacustris" (N)
*"Cakile edentula" ssp. "edentula" (N)
*"Calamagrostis canadensis" var. "canadensis" (N)
*"Calamagrostis canadensis" var. "macouniana" (N)
*"Calamagrostis coarctata" (N)
*"Calamagrostis porteri" ssp. "insperata" (N)
*"Calamagrostis stricta" ssp. "inexpansa" (N)
*"Calamovilfa longifolia" var. "magna" (N)
*"Calendula officinalis" (I)
*"Calla palustris" (N)
*"Callitriche heterophylla" ssp. "heterophylla" (N)
*"Callitriche palustris" (N)
*"Callitriche terrestris" (N)
*"Calluna vulgaris" (I)
*"Calopogon tuberosus" var. "tuberosus" (N)
*"Caltha palustris" var. "palustris" (N)
*"Calycanthus floridus" var. "glaucus" (N)
*"Calystegia hederacea" (I)
*"Calystegia sepium" ssp. "americana" (N)
*"Calystegia sepium" ssp. "angulata" (N)
*"Calystegia sepium" ssp. "sepium" (I)
*"Calystegia silvatica" (I)
*"Calystegia silvatica" ssp. "fraterniflora" (N)
*"Calystegia spithamaea" ssp. "spithamaea" (N)
*"Camassia scilloides" (N)
*"Camelina microcarpa" (I)
*"Camelina sativa" ssp. "sativa" (I)
*"Campanula aparinoides" (N)
*"Campanula rapunculoides" (I)
*"Campanula rotundifolia" (N)
*"Campanula trachelium" (I)
*"Campanulastrum americanum" (N)
*"Campsis radicans" (N)
*"Cannabis sativa" ssp. "sativa" var. "sativa" (I)
*"Capsella bursa-pastoris" (I)
*"Cardamine angustata" (N)
*"Cardamine bulbifera" (I)
*"Cardamine bulbosa" (N)
*"Cardamine concatenata" (N)
*"Cardamine diphylla" (N)
*"Cardamine dissecta" (N)
*"Cardamine douglassii" (N)
*"Cardamine flexuosa" (I)
*"Cardamine hirsuta" (I)
*"Cardamine impatiens" (I)
*"Cardamine maxima" (N)
*"Cardamine parviflora" var. "arenicola" (N)
*"Cardamine pensylvanica" (N)
*"Cardamine pratensis" var. "pratensis" (N)
*"Cardamine rotundifolia" (N)
*"Cardaria draba" (I)
*"Cardiospermum halicacabum" (I)
*"Carduus acanthoides" (I)
*"Carduus crispus" (I)
*"Carduus nutans" (I)
*"Carex aggregata" (N)
*"Carex alata" (N)
*"Carex albicans" var. "albicans" (N)
*"Carex albicans" var. "emmonsii" (N)
*"Carex albolutescens" (N)
*"Carex albursina" (N)
*"Carex alopecoidea" (N)
*"Carex amphibola" (N)
*"Carex annectens" (N)
*"Carex appalachica" (N)
*"Carex aquatilis" var. "aquatilis" (N)
*"Carex arctata" (N)
*"Carex argyrantha" (N)
*"Carex atherodes" (N)
*"Carex atlantica" ssp. "atlantica" (N)
*"Carex atlantica" ssp. "capillacea" (N)
*"Carex aurea" (N)
*"Carex bebbii" (N)
*"Carex bicknellii" (N)
*"Carex blanda" (N)
*"Carex brevior" (N)
*"Carex bromoides" ssp. "bromoides" (N)
*"Carex brunnescens" ssp. "sphaerostachya" (N)
*"Carex bushii" (N)
*"Carex buxbaumii" (N)
*"Carex canescens" ssp. "canescens" (N)
*"Carex canescens" ssp. "disjuncta" (N)
*"Carex careyana" (N)
*"Carex caroliniana" (N)
*"Carex cephaloidea" (N)
*"Carex cephalophora" (N)
*"Carex communis" var. "communis" (N)
*"Carex comosa" (N)
*"Carex conjuncta" (N)
*"Carex conoidea" (N)
*"Carex crawei" (N)
*"Carex crinita" var. "brevicrinis" (N)
*"Carex crinita" var. "crinita" (N)
*"Carex cristatella" (N)
*"Carex crus-corvi" (N)
*"Carex cryptolepis" (N)
*"Carex cumberlandensis" (N)
*"Carex davisii" (N)
*"Carex debilis" var. "debilis" (N)
*"Carex debilis" var. "rudgei" (N)
*"Carex decomposita" (N)
*"Carex deweyana" var. "deweyana" (N)
*"Carex diandra" (N)
*"Carex digitalis" var. "digitalis" (N)
*"Carex disperma" (N)
*"Carex eburnea" (N)
*"Carex echinata" ssp. "echinata" (N)
*"Carex emoryi" (N)
*"Carex festucacea" (N)
*"Carex flava" (N)
*"Carex folliculata" (N)
*"Carex formosa" (N)
*"Carex frankii" (N)
*"Carex garberi" (N)
*"Carex glaucodea" (N)
*"Carex gracilescens" (N)
*"Carex gracillima" (N)
*"Carex granularis" (N)
*"Carex grayi" (N)
*"Carex grisea" (N)
*"Carex gynandra" (N)
*"Carex haydenii" (N)
*"Carex hirsutella" (N)
*"Carex hirtifolia" (N)
*"Carex hitchcockiana" (N)
*"Carex hyalinolepis" (N)
*"Carex hystericina" (N)
*"Carex interior" (N)
*"Carex intumescens" (N)
*"Carex jamesii" (N)
*"Carex juniperorum" (N)
*"Carex lacustris" (N)
*"Carex laevivaginata" (N)
*"Carex lasiocarpa" var. "americana" (N)
*"Carex laxiculmis" var. "copulata" (N)
*"Carex laxiculmis" var. "laxiculmis" (N)
*"Carex laxiflora" var. "laxiflora" (N)
*"Carex leavenworthii" (N)
*"Carex leptalea" ssp. "leptalea" (N)
*"Carex leptonervia" (N)
*"Carex limosa" (N)
*"Carex longii" (N)
*"Carex louisianica" (N)
*"Carex lucorum" var. "lucorum" (N)
*"Carex lupuliformis" (N)
*"Carex lupulina" (N)
*"Carex lurida" (N)
*"Carex magellanica" ssp. "irrigua" (N)
*"Carex meadii" (N)
*"Carex merritt-fernaldii" (N)
*"Carex mesochorea" (N)
*"Carex molesta" (N)
*"Carex muehlenbergii" var. "enervis" (N)
*"Carex muehlenbergii" var. "muehlenbergii" (N)
*"Carex muskingumensis" (N)
*"Carex nigromarginata" (N)
*"Carex normalis" (N)
*"Carex oligocarpa" (N)
*"Carex oligosperma" var. "oligosperma" (N)
*"Carex pallescens" (N)
*"Carex peckii" (N)
*"Carex pedunculata" (N)
*"Carex pellita" (N)
*"Carex pensylvanica" (N)
*"Carex planispicata" (N)
*"Carex plantaginea" (N)
*"Carex platyphylla" (N)
*"Carex praegracilis" (N)
*"Carex prairea" (N)
*"Carex prasina" (N)
*"Carex projecta" (N)
*"Carex pseudocyperus" (N)
*"Carex purpurifera" (N)
*"Carex radiata" (N)
*"Carex retroflexa" (N)
*"Carex retrorsa" (N)
*"Carex richardsonii" (N)
*"Carex rosea" (N)
*"Carex sartwellii" var. "sartwellii" (N)
*"Carex scabrata" (N)
*"Carex scoparia" var. "scoparia" (N)
*"Carex seorsa" (N)
*"Carex shortiana" (N)
*"Carex siccata" (N)
*"Carex sparganioides" (N)
*"Carex spicata" (I)
*"Carex sprengelii" (N)
*"Carex squarrosa" (N)
*"Carex sterilis" (N)
*"Carex stipata" var. "maxima" (N)
*"Carex stipata" var. "stipata" (N)
*"Carex straminea" (N)
*"Carex striatula" (N)
*"Carex stricta" (N)
*"Carex styloflexa" (N)
*"Carex suberecta" (N)
*"Carex × subimpressa" (N)
*"Carex × sullivantii" (N)
*"Carex swanii" (N)
*"Carex tenera" (N)
*"Carex tenuiflora" (N)
*"Carex tetanica" (N)
*"Carex texensis" (N)
*"Carex timida" (N)
*"Carex tonsa" var. "rugosperma" (N)
*"Carex torta" (N)
*"Carex tribuloides" var. "tribuloides" (N)
*"Carex trichocarpa" (N)
*"Carex trisperma" var. "trisperma" (N)
*"Carex tuckermanii" (N)
*"Carex typhina" (N)
*"Carex umbellata" (N)
*"Carex utriculata" (N)
*"Carex vesicaria" var. "monile" (N)
*"Carex virescens" (N)
*"Carex viridula" ssp. "viridula" (N)
*"Carex vulpinoidea" var. "vulpinoidea" (N)
*"Carex willdenowii" (N)
*"Carex woodii" (N)
*"Carpinus caroliniana" ssp. "virginiana" (N)
*"Carthamus tinctorius" (I)
*"Carum carvi" (I)
*"Carya alba" (N)
*"Carya × brownii" (N)
*"Carya cordiformis" (N)
*"Carya glabra" (N)
*"Carya illinoinensis" (N)
*"Carya laciniosa" (N)
*"Carya ovalis" (N)
*"Carya ovata" (N)
*"Castanea dentata" (N)
*"Castanea pumila" var. "pumila" (N)
*"Castilleja coccinea" (N)
*"Catalpa bignonioides" (N)
*"Catalpa ovata" (I)
*"Catalpa speciosa" (N)
*"Caulophyllum giganteum" (N)
*"Caulophyllum thalictroides" (N)
*"Ceanothus americanus" (N)
*"Ceanothus herbaceus" (N)
*"Celastrus orbiculatus" (I)
*"Celastrus scandens" (N)
*"Celosia argentea" (I)
*"Celtis occidentalis" (N)
*"Celtis tenuifolia" (N)
*"Cenchrus longispinus" (N)
*"Centaurea cyanus" (I)
*"Centaurea diffusa" (I)
*"Centaurea jacea" (I)
*"Centaurea nigra" (I)
*"Centaurea nigrescens" (I)
*"Centaurea phrygia" (I)
*"Centaurea scabiosa" (I)
*"Centaurea solstitialis" (I)
*"Centaurea stoebe" ssp. "micranthos" (I)
*"Centaurea transalpina" (N)
*"Centaurium erythraea" (I)
*"Centaurium pulchellum" (I)
*"Centella erecta" (N)
*"Cephalanthus occidentalis" (N)
*"Cerastium arvense" (I)
*"Cerastium arvense" ssp. "strictum" (N)
*"Cerastium arvense" ssp. "velutinum" var. "velutinum" (N)
*"Cerastium arvense" ssp. "velutinum" (N)
*"Cerastium brachypetalum" (I)
*"Cerastium dubium" (I)
*"Cerastium fontanum" ssp. "vulgare" (I)
*"Cerastium glomeratum" (I)
*"Cerastium nutans" var. "nutans" (N)
*"Cerastium pumilum" (I)
*"Cerastium semidecandrum" (I)
*"Cerastium tomentosum" (I)
*"Ceratocephala testiculata" (I)
*"Ceratophyllum demersum" (N)
*"Ceratophyllum echinatum" (N)
*"Cercidiphyllum japonicum" (I)
*"Cercis canadensis" var. "canadensis" (N)
*"Chaenomeles speciosa" (I)
*"Chaenorhinum minus" (I)
*"Chaerophyllum procumbens" var. "procumbens" (N)
*"Chaerophyllum procumbens" var. "shortii" (N)
*"Chaerophyllum tainturieri" var. "tainturieri" (N)
*"Chaiturus marrubiastrum" (I)
*"Chamaecrista fasciculata" var. "fasciculata" (N)
*"Chamaecrista nictitans" ssp. "nictitans" var. "nictitans" (N)
*"Chamaecrista nictitans" ssp. "nictitans" (N)
*"Chamaedaphne calyculata" (N)
*"Chamaelirium luteum" (N)
*"Chamaemelum mixtum" (I)
*"Chamaemelum nobile" (I)
*"Chamaesyce humistrata" (N)
*"Chamaesyce maculata" (N)
*"Chamaesyce nutans" (N)
*"Chamaesyce polygonifolia" (N)
*"Chamaesyce prostrata" (N)
*"Chamaesyce serpens" (N)
*"Chamaesyce vermiculata" (N)
*"Chamerion angustifolium" ssp. "circumvagum" (N)
*"Chasmanthium latifolium" (N)
*"Chelidonium majus" var. "majus" (I)
*"Chelone glabra" (N)
*"Chenopodium album" var. "missouriense" (N)
*"Chenopodium album" var. "album" (I)
*"Chenopodium ambrosioides" var. "ambrosioides" (I)
*"Chenopodium berlandieri" var. "bushianum" (N)
*"Chenopodium berlandieri" var. "zschackii" (N)
*"Chenopodium botrys" (I)
*"Chenopodium capitatum" (N)
*"Chenopodium glaucum" (I)
*"Chenopodium glaucum" (N)
*"Chenopodium humile" (I)
*"Chenopodium humile" (N)
*"Chenopodium incanum" var. "incanum" (N)
*"Chenopodium murale" (I)
*"Chenopodium polyspermum" var. "acutifolium" (I)
*"Chenopodium pratericola" (N)
*"Chenopodium pumilio" (I)
*"Chenopodium simplex" (N)
*"Chenopodium standleyanum" (N)
*"Chenopodium subglabrum" (N)
*"Chenopodium urbicum" (I)
*"Chenopodium vulvaria" (I)
*"Chimaphila maculata" (N)
*"Chimaphila umbellata" ssp. "cisatlantica" (N)
*"Chionanthus virginicus" (N)
*"Chloris verticillata" (N)
*"Chloris virgata" (N)
*"Chorispora tenella" (I)
*"Chrysanthemum × morifolium" (I)
*"Chrysogonum virginianum" var. "virginianum" (N)
*"Chrysopsis mariana" (N)
*"Chrysosplenium americanum" (N)
*"Cichorium intybus" (I)
*"Cicuta bulbifera" (N)
*"Cicuta maculata" var. "maculata" (N)
*"Cinna arundinacea" (N)
*"Cinna latifolia" (N)
*"Circaea alpina" ssp. "alpina" (N)
*"Circaea × intermedia" (N)
*"Circaea lutetiana" ssp. "canadensis" (N)
*"Cirsium altissimum" (N)
*"Cirsium arvense" (I)
*"Cirsium canescens" (N)
*"Cirsium carolinianum" (N)
*"Cirsium discolor" (N)
*"Cirsium muticum" (N)
*"Cirsium pumilum" (N)
*"Cirsium vulgare" (I)
*"Citrullus lanatus" var. "lanatus" (I)
*"Cladium mariscoides" (N)
*"Cladrastis kentukea" (N)
*"Clarkia pulchella" (N)
*"Claytonia caroliniana" var. "caroliniana" (N)
*"Claytonia virginica" var. "virginica" (N)
*"Clematis occidentalis" var. "occidentalis" (N)
*"Clematis terniflora" (I)
*"Clematis viorna" (N)
*"Clematis virginiana" (N)
*"Cleome hassleriana" (I)
*"Cleome serrulata" (N)
*"Clinopodium arkansanum" (N)
*"Clinopodium vulgare" (N)
*"Clintonia borealis" (N)
*"Clintonia umbellulata" (N)
*"Clitoria mariana" (N)
*"Coix lacryma-jobi" (I)
*"Collinsia verna" (N)
*"Collinsonia canadensis" (N)
*"Collinsonia verticillata" (N)
*"Collomia linearis" (N)
*"Colutea arborescens" (I)
*"Comandra umbellata" ssp. "umbellata" (N)
*"Comarum palustre" (N)
*"Commelina communis" (I)
*"Commelina diffusa" var. "diffusa" (N)
*"Commelina virginica" (N)
*"Comptonia peregrina" (N)
*"Conioselinum chinense" (N)
*"Conium maculatum" (I)
*"Conoclinium coelestinum" (N)
*"Conopholis americana" (N)
*"Conringia orientalis" (I)
*"Consolida ajacis" (I)
*"Consolida regalis" (I)
*"Convallaria majalis" (I)
*"Convolvulus arvensis" (I)
*"Conyza canadensis" var. "canadensis" (N)
*"Conyza canadensis" var. "pusilla" (N)
*"Conyza ramosissima" (N)
*"Coptis trifolia" (N)
*"Corallorhiza maculata" var. "maculata" (N)
*"Corallorhiza odontorhiza" var. "odontorhiza" (N)
*"Corallorhiza trifida" (N)
*"Corallorhiza wisteriana" (N)
*"Coreopsis grandiflora" var. "harveyana" (N)
*"Coreopsis lanceolata" (N)
*"Coreopsis major" (N)
*"Coreopsis tinctoria" var. "tinctoria" (N)
*"Coreopsis tripteris" (N)
*"Coreopsis verticillata" (N)
*"Coriandrum sativum" (I)
*"Corispermum americanum" var. "americanum" (N)
*"Corispermum pallasii" (I)
*"Corispermum pallasii" (N)
*"Cornus alternifolia" (N)
*"Cornus amomum" (N)
*"Cornus × arnoldiana" (N)
*"Cornus canadensis" (N)
*"Cornus drummondii" (N)
*"Cornus florida" (N)
*"Cornus obliqua" (N)
*"Cornus racemosa" (N)
*"Cornus rugosa" (N)
*"Cornus sericea" ssp. "sericea" (N)
*"Coronilla scorpioides" (I)
*"Coronopus didymus" (I)
*"Corydalis aurea" (N)
*"Corydalis flavula" (N)
*"Corydalis sempervirens" (N)
*"Corylus americana" (N)
*"Corylus cornuta" var. "cornuta" (N)
*"Cosmos bipinnatus" (I)
*"Cotinus coggygria" (I)
*"Cotoneaster divaricatus" (I)
*"Cotoneaster simonsii" (I)
*"Crataegus × anomala" (N)
*"Crataegus apiomorpha" (N)
*"Crataegus arborea" (N)
*"Crataegus ater" (N)
*"Crataegus beata" (N)
*"Crataegus brainerdii" (N)
*"Crataegus calpodendron" (N)
*"Crataegus chrysocarpa" var. "chrysocarpa" (N)
*"Crataegus coleae" (N)
*"Crataegus compacta" (N)
*"Crataegus compta" (N)
*"Crataegus corusca" (N)
*"Crataegus crus-galli" (N)
*"Crataegus disperma" (N)
*"Crataegus dissona" (N)
*"Crataegus engelmannii" (N)
*"Crataegus flabellata" (N)
*"Crataegus holmesiana" (N)
*"Crataegus × hudsonica" (N)
*"Crataegus × immanis" (N)
*"Crataegus indicens" (N)
*"Crataegus intricata" (N)
*"Crataegus iracunda" (N)
*"Crataegus irrasa" (N)
*"Crataegus jesupii" (N)
*"Crataegus lucorum" (N)
*"Crataegus macrosperma" (N)
*"Crataegus margarettiae" (N)
*"Crataegus mollis" (N)
*"Crataegus monogyna" (I)
*"Crataegus nitida" (N)
*"Crataegus pedicellata" (N)
*"Crataegus pennsylvanica" (N)
*"Crataegus persimilis" (N)
*"Crataegus phaenopyrum" (N)
*"Crataegus pringlei" (N)
*"Crataegus prona" (N)
*"Crataegus pruinosa" (N)
*"Crataegus punctata" (N)
*"Crataegus scabrida" (N)
*"Crataegus schuettei" (N)
*"Crataegus submollis" (N)
*"Crataegus suborbiculata" (N)
*"Crataegus succulenta" (N)
*"Crataegus tanuphylla" (N)
*"Crataegus uniflora" (N)
*"Crepis biennis" (I)
*"Crepis capillaris" (I)
*"Crepis nicaeensis" (I)
*"Crepis pulchra" (I)
*"Crepis setosa" (I)
*"Crepis tectorum" (I)
*"Crotalaria sagittalis" (N)
*"Croton capitatus" var. "capitatus" (N)
*"Croton glandulosus" var. "septentrionalis" (N)
*"Croton monanthogynus" (N)
*"Cruciata pedemontana" (I)
*"Crypsis schoenoides" (I)
*"Cryptotaenia canadensis" (N)
*"Cucumis melo" (I)
*"Cucumis sativus" (I)
*"Cucurbita foetidissima" (N)
*"Cucurbita maxima" (I)
*"Cucurbita pepo" (N)
*"Cucurbita pepo" var. "pepo" (I)
*"Cunila origanoides" (N)
*"Cuphea viscosissima" (N)
*"Cuscuta cephalanthi" (N)
*"Cuscuta compacta" var. "compacta" (N)
*"Cuscuta coryli" (N)
*"Cuscuta epilinum" (I)
*"Cuscuta epithymum" (I)
*"Cuscuta glomerata" (N)
*"Cuscuta gronovii" var. "gronovii" (N)
*"Cuscuta pentagona" var. "pentagona" (N)
*"Cuscuta polygonorum" (N)
*"Cuscuta suaveolens" (I)
*"Cyclachaena xanthifolia" (N)
*"Cycloloma atriplicifolium" (N)
*"Cydonia oblonga" (I)
*"Cymbalaria muralis" (I)
*"Cynanchum laeve" (N)
*"Cynanchum louiseae" (I)
*"Cynodon dactylon" (I)
*"Cynoglossum officinale" (I)
*"Cynoglossum virginianum" var. "boreale" (N)
*"Cynoglossum virginianum" var. "virginianum" (N)
*"Cynosurus cristatus" (I)
*"Cynosurus echinatus" (I)
*"Cyperus acuminatus" (N)
*"Cyperus amuricus" (I)
*"Cyperus bipartitus" (N)
*"Cyperus compressus" (N)
*"Cyperus diandrus" (N)
*"Cyperus echinatus" (N)
*"Cyperus erythrorhizos" (N)
*"Cyperus esculentus" (N)
*"Cyperus esculentus" var. "leptostachyus" (I)
*"Cyperus flavescens" (N)
*"Cyperus houghtonii" (N)
*"Cyperus iria" (I)
*"Cyperus lancastriensis" (N)
*"Cyperus lupulinus" ssp. "lupulinus" (N)
*"Cyperus lupulinus" ssp. "macilentus" (N)
*"Cyperus odoratus" (N)
*"Cyperus refractus" (N)
*"Cyperus retrofractus" (N)
*"Cyperus schweinitzii" (N)
*"Cyperus squarrosus" (N)
*"Cyperus strigosus" (N)
*"Cypripedium acaule" (N)
*"Cypripedium × andrewsii" var. "andrewsii" (N)
*"Cypripedium × andrewsii" var. "landonii" (N)
*"Cypripedium candidum" (N)
*"Cypripedium parviflorum" var. "parviflorum" (N)
*"Cypripedium parviflorum" var. "pubescens" (N)
*"Cypripedium reginae" (N)
*"Cyrtomium falcatum" (I)
*"Cystopteris bulbifera" (N)
*"Cystopteris fragilis" (N)
*"Cystopteris × illinoensis" (N)
*"Cystopteris protrusa" (N)
*"Cystopteris tennesseensis" (N)
*"Cystopteris tenuis" (N)
*"Cystopteris × wagneri" (N)
*"Cytisus scoparius" var. "scoparius" (I)

D

*"Dactylis glomerata" ssp. "glomerata" (I)
*"Dactyloctenium aegyptium" (I)
*"Dactylorhiza viridis" (N)
*"Dalea leporina" (N)
*"Dalea purpurea" var. "purpurea" (N)
*"Dalibarda repens" (N)
*"Danthonia compressa" (N)
*"Danthonia spicata" (N)
*"Daphne mezereum" (I)
*"Dasiphora fruticosa" ssp. "floribunda" (N)
*"Dasistoma macrophylla" (N)
*"Datura stramonium" (I)
*"Datura wrightii" (N)
*"Daucus carota" (I)
*"Decodon verticillatus" (N)
*"Delphinium exaltatum" (N)
*"Delphinium tricorne" (N)
*"Dennstaedtia punctilobula" (N)
*"Deparia acrostichoides" (N)
*"Deschampsia cespitosa" (N)
*"Deschampsia danthonioides" (N)
*"Deschampsia flexuosa" var. "flexuosa" (N)
*"Descurainia pinnata" ssp. "brachycarpa" (N)
*"Descurainia sophia" (I)
*"Desmanthus illinoensis" (N)
*"Desmodium canadense" (N)
*"Desmodium canescens" (N)
*"Desmodium ciliare" var. "ciliare" (N)
*"Desmodium cuspidatum" var. "cuspidatum" (N)
*"Desmodium cuspidatum" var. "longifolium" (N)
*"Desmodium glutinosum" (N)
*"Desmodium illinoense" (N)
*"Desmodium laevigatum" (N)
*"Desmodium marilandicum" (N)
*"Desmodium nudiflorum" (N)
*"Desmodium obtusum" (N)
*"Desmodium paniculatum" var. "paniculatum" (N)
*"Desmodium pauciflorum" (N)
*"Desmodium perplexum" (N)
*"Desmodium rotundifolium" (N)
*"Desmodium sessilifolium" (N)
*"Desmodium viridiflorum" (N)
*"Dianthus armeria" (I)
*"Dianthus barbatus" (I)
*"Dianthus deltoides" (I)
*"Dianthus plumarius" (I)
*"Diarrhena americana" (N)
*"Diarrhena obovata" (N)
*"Dicentra canadensis" (N)
*"Dicentra cucullaria" (N)
*"Dicentra eximia" (N)
*"Dichanthelium acuminatum" var. "acuminatum" (N)
*"Dichanthelium acuminatum" var. "fasciculatum" (N)
*"Dichanthelium acuminatum" var. "lindheimeri" (N)
*"Dichanthelium boreale" (N)
*"Dichanthelium boscii" (N)
*"Dichanthelium clandestinum" (N)
*"Dichanthelium commutatum" (N)
*"Dichanthelium depauperatum" (N)
*"Dichanthelium dichotomum" var. "dichotomum" (N)
*"Dichanthelium latifolium" (N)
*"Dichanthelium laxiflorum" (N)
*"Dichanthelium leibergii" (N)
*"Dichanthelium linearifolium" (N)
*"Dichanthelium longiligulatum" (N)
*"Dichanthelium meridionale" (N)
*"Dichanthelium oligosanthes" var. "oligosanthes" (N)
*"Dichanthelium oligosanthes" var. "scribnerianum" (N)
*"Dichanthelium ovale" var. "addisonii" (N)
*"Dichanthelium sabulorum" var. "patulum" (N)
*"Dichanthelium sabulorum" var. "thinium" (N)
*"Dichanthelium sphaerocarpon" var. "isophyllum" (N)
*"Dichanthelium sphaerocarpon" var. "sphaerocarpon" (N)
*"Dichanthelium spretum" (N)
*"Dichanthelium villosissimum" var. "praecocius" (N)
*"Dichondra carolinensis" (N)
*"Diervilla lonicera" (N)
*"Digitalis grandiflora" (I)
*"Digitalis lanata" (I)
*"Digitalis lutea" (I)
*"Digitalis purpurea" ssp. "purpurea" (I)
*"Digitaria ciliaris" (N)
*"Digitaria cognata" (N)
*"Digitaria filiformis" (N)
*"Digitaria ischaemum" (I)
*"Digitaria sanguinalis" (N)
*"Diodia teres" var. "teres" (N)
*"Diodia virginiana" var. "virginiana" (N)
*"Dioscorea oppositifolia" (I)
*"Dioscorea quaternata" (N)
*"Dioscorea villosa" (N)
*"Diospyros virginiana" (N)
*"Diplazium pycnocarpon" (N)
*"Diplotaxis muralis" (I)
*"Diplotaxis tenuifolia" (I)
*"Dipsacus fullonum" (I)
*"Dipsacus laciniatus" (I)
*"Dipsacus sativus" (I)
*"Dirca palustris" (N)
*"Distichlis spicata" (N)
*"Dodecatheon meadia" ssp. "meadia" (N)
*"Doellingeria infirma" (N)
*"Doellingeria umbellata" var. "umbellata" (N)
*"Draba brachycarpa" (N)
*"Draba cuneifolia" var. "cuneifolia" (N)
*"Draba reptans" (N)
*"Draba verna" (I)
*"Dracocephalum parviflorum" (N)
*"Drosera intermedia" (N)
*"Drosera rotundifolia" var. "rotundifolia" (N)
*"Dryopteris × benedictii" (N)
*"Dryopteris × boottii" (N)
*"Dryopteris carthusiana" (N)
*"Dryopteris clintoniana" (N)
*"Dryopteris cristata" (N)
*"Dryopteris goldiana" (N)
*"Dryopteris intermedia" (N)
*"Dryopteris marginalis" (N)
*"Dryopteris × mickelii" (N)
*"Dryopteris × neowherryi" (N)
*"Dryopteris × pittsfordensis" (N)
*"Dryopteris × slossoniae" (N)
*"Dryopteris × triploidea" (N)
*"Dryopteris × uliginosa" (N)
*"Duchesnea indica" (I)
*"Dulichium arundinaceum" var. "arundinaceum" (N)
*"Dyssodia papposa" (N)

E

*"Echinacea purpurea" (N)
*"Echinochloa crus-galli" (I)
*"Echinochloa frumentacea" (I)
*"Echinochloa muricata" var. "microstachya" (N)
*"Echinochloa muricata" var. "muricata" (N)
*"Echinochloa walteri" (N)
*"Echinocystis lobata" (N)
*"Echinodorus berteroi" (N)
*"Echium vulgare" (I)
*"Eclipta prostrata" (N)
*"Egeria densa" (I)
*"Elaeagnus angustifolia" (I)
*"Elaeagnus multiflora" (I)
*"Elaeagnus umbellata" var. "parvifolia" (I)
*"Elatine brachysperma" (N)
*"Eleocharis acicularis" var. "acicularis" (N)
*"Eleocharis compressa" var. "compressa" (N)
*"Eleocharis elliptica" (N)
*"Eleocharis engelmannii" (N)
*"Eleocharis erythropoda" (N)
*"Eleocharis geniculata" (N)
*"Eleocharis intermedia" (N)
*"Eleocharis obtusa" (N)
*"Eleocharis olivacea" var. "olivacea" (N)
*"Eleocharis ovata" (N)
*"Eleocharis palustris" var. "palustris" (N)
*"Eleocharis parvula" (N)
*"Eleocharis quadrangulata" (N)
*"Eleocharis quinqueflora" (N)
*"Eleocharis rostellata" (N)
*"Eleocharis tenuis" var. "tenuis" (N)
*"Eleocharis tenuis" var. "verrucosa" (N)
*"Eleocharis wolfii" (N)
*"Elephantopus carolinianus" (N)
*"Eleusine indica" (I)
*"Ellisia nyctelea" (N)
*"Elodea canadensis" (N)
*"Elodea nuttallii" (N)
*"Elymus canadensis" (N)
*"Elymus hystrix" var. "bigeloviana" (N)
*"Elymus hystrix" var. "hystrix" (N)
*"Elymus repens" (I)
*"Elymus riparius" (N)
*"Elymus submuticus" (N)
*"Elymus trachycaulus" ssp. "subsecundus" (N)
*"Elymus trachycaulus" ssp. "trachycaulus" (N)
*"Elymus villosus" (N)
*"Elymus virginicus" var. "virginicus" (N)
*"Enemion biternatum" (N)
*"Epifagus virginiana" (N)
*"Epigaea repens" (N)
*"Epilobium ciliatum" ssp. "ciliatum" (N)
*"Epilobium ciliatum" ssp. "glandulosum" (N)
*"Epilobium coloratum" (N)
*"Epilobium hirsutum" (I)
*"Epilobium leptophyllum" (N)
*"Epilobium parviflorum" (I)
*"Epilobium strictum" (N)
*"Epilobium × wisconsinense" (N)
*"Epipactis helleborine" (I)
*"Equisetum arvense" (N)
*"Equisetum × ferrissii" (N)
*"Equisetum fluviatile" (N)
*"Equisetum hyemale" var. "affine" (N)
*"Equisetum laevigatum" (N)
*"Equisetum × mackaii" (N)
*"Equisetum × nelsonii" (N)
*"Equisetum sylvaticum" (N)
*"Equisetum variegatum" var. "variegatum" (N)
*"Eragrostis capillaris" (N)
*"Eragrostis cilianensis" (I)
*"Eragrostis curvula" (I)
*"Eragrostis frankii" (N)
*"Eragrostis hirsuta" (N)
*"Eragrostis hypnoides" (N)
*"Eragrostis minor" (I)
*"Eragrostis pectinacea" var. "miserrima" (N)
*"Eragrostis pectinacea" var. "pectinacea" (N)
*"Eragrostis pilosa" (N)
*"Eragrostis spectabilis" (N)
*"Eragrostis trichodes" (N)
*"Eranthis hyemalis" (I)
*"Erechtites hieraciifolia" var. "hieraciifolia" (N)
*"Erica tetralix" (I)
*"Erigenia bulbosa" (N)
*"Erigeron annuus" (N)
*"Erigeron philadelphicus" var. "philadelphicus" (N)
*"Erigeron pulchellus" var. "brauniae" (N)
*"Erigeron pulchellus" var. "pulchellus" (N)
*"Erigeron strigosus" var. "strigosus" (N)
*"Eriocaulon aquaticum" (N)
*"Eriochloa contracta" (N)
*"Eriophorum gracile" var. "gracile" (N)
*"Eriophorum virginicum" (N)
*"Eriophorum viridicarinatum" (N)
*"Erodium cicutarium" ssp. "cicutarium" (I)
*"Erucastrum gallicum" (I)
*"Eryngium yuccifolium" var. "yuccifolium" (N)
*"Erysimum capitatum" var. "capitatum" (N)
*"Erysimum cheiranthoides" (I)
*"Erysimum inconspicuum" var. "inconspicuum" (N)
*"Erysimum repandum" (I)
*"Erythronium albidum" (N)
*"Erythronium americanum" ssp. "americanum" (N)
*"Erythronium rostratum" (N)
*"Eschscholzia californica" ssp. "californica" (N)
*"Eubotrys recurva" (N)
*"Euonymus alatus" var. "alatus" (I)
*"Euonymus americanus" (N)
*"Euonymus atropurpureus" var. "atropurpureus" (N)
*"Euonymus europaeus" (I)
*"Euonymus fortunei" var. "radicans" (I)
*"Euonymus obovatus" (N)
*"Eupatoriadelphus fistulosus" (N)
*"Eupatoriadelphus maculatus" var. "maculatus" (N)
*"Eupatorium album" var. "album" (N)
*"Eupatorium altissimum" (N)
*"Eupatorium godfreyanum" (N)
*"Eupatorium hyssopifolium" var. "laciniatum" (N)
*"Eupatorium perfoliatum" var. "perfoliatum" (N)
*"Eupatorium purpureum" var. "purpureum" (N)
*"Eupatorium rotundifolium" var. "ovatum" (N)
*"Eupatorium rotundifolium" var. "rotundifolium" (N)
*"Eupatorium serotinum" (N)
*"Eupatorium sessilifolium" var. "sessilifolium" (N)
*"Euphorbia commutata" (N)
*"Euphorbia corollata" (N)
*"Euphorbia cyathophora" (N)
*"Euphorbia cyparissias" (I)
*"Euphorbia davidii" (I)
*"Euphorbia dentata" (I)
*"Euphorbia dentata" var. "dentata" (N)
*"Euphorbia esula" var. "esula" (I)
*"Euphorbia falcata" (I)
*"Euphorbia helioscopia" (I)
*"Euphorbia lathyris" (I)
*"Euphorbia marginata" (N)
*"Euphorbia peplus" (I)
*"Euphorbia platyphyllos" (I)
*"Euphorbia purpurea" (N)
*"Euphorbia spathulata" (N)
*"Eurybia divaricata" (N)
*"Eurybia macrophylla" (N)
*"Eurybia schreberi" (N)
*"Eurybia surculosa" (N)
*"Euthamia graminifolia" var. "graminifolia" (N)
*"Euthamia gymnospermoides" (N)

F

*"Fagopyrum esculentum" (I)
*"Fagus grandifolia" (N)
*"Fagus sylvatica" (I)
*"Fatoua villosa" (I)
*"Festuca brevipila" (I)
*"Festuca filiformis" (I)
*"Festuca rubra" (I)
*"Festuca rubra" ssp. "rubra" (N)
*"Festuca subverticillata" (N)
*"Filago vulgaris" (I)
*"Filipendula rubra" (N)
*"Filipendula ulmaria" ssp. "ulmaria" (I)
*"Fimbristylis autumnalis" (N)
*"Fleischmannia incarnata" (N)
*"Floerkea proserpinacoides" (N)
*"Foeniculum vulgare" (I)
*"Fontanesia phillyreoides" ssp. "fortunei" (I)
*"Forsythia × intermedia" (I)
*"Forsythia suspensa" (I)
*"Fragaria vesca" ssp. "americana" (N)
*"Fragaria vesca" ssp. "vesca" (N)
*"Fragaria virginiana" ssp. "grayana" (N)
*"Fragaria virginiana" ssp. "virginiana" (N)
*"Frangula alnus" (I)
*"Frangula alnus" (N)
*"Frangula caroliniana" (N)
*"Frasera caroliniensis" (N)
*"Fraxinus americana" (N)
*"Fraxinus excelsior" (I)
*"Fraxinus nigra" (N)
*"Fraxinus pennsylvanica" (N)
*"Fraxinus profunda" (N)
*"Fraxinus quadrangulata" (N)
*"Froelichia floridana" var. "campestris" (N)
*"Froelichia gracilis" (N)
*"Fumaria officinalis" ssp. "officinalis" (I)

G

*"Gaillardia pulchella" var. "pulchella" (N)
*"Galactia volubilis" (N)
*"Galanthus elwesii" (I)
*"Galanthus nivalis" (I)
*"Galax urceolata" (N)
*"Galearis spectabilis" (N)
*"Galeopsis bifida" (I)
*"Galeopsis ladanum" var. "ladanum" (I)
*"Galeopsis tetrahit" var. "tetrahit" (I)
*"Galinsoga parviflora" (I)
*"Galinsoga quadriradiata" (I)
*"Galium aparine" (N)
*"Galium asprellum" (N)
*"Galium boreale" (N)
*"Galium circaezans" var. "hypomalacum" (N)
*"Galium concinnum" (N)
*"Galium labradoricum" (N)
*"Galium lanceolatum" (N)
*"Galium mollugo" (I)
*"Galium obtusum" ssp. "obtusum" (N)
*"Galium odoratum" (I)
*"Galium palustre" (N)
*"Galium pilosum" var. "pilosum" (N)
*"Galium tinctorium" (N)
*"Galium trifidum" ssp. "trifidum" (N)
*"Galium triflorum" (N)
*"Galium verum" var. "verum" (I)
*"Gamochaeta purpurea" (N)
*"Gaultheria hispidula" (N)
*"Gaultheria procumbens" (N)
*"Gaura biennis" (N)
*"Gaura longiflora" (N)
*"Gaura mollis" (N)
*"Gaylussacia baccata" (N)
*"Genista tinctoria" (I)
*"Gentiana alba" (N)
*"Gentiana andrewsii" var. "andrewsii" (N)
*"Gentiana × billingtonii" (N)
*"Gentiana clausa" (N)
*"Gentiana puberulenta" (N)
*"Gentiana saponaria" var. "saponaria" (N)
*"Gentiana villosa" (N)
*"Gentianella quinquefolia" ssp. "occidentalis" (N)
*"Gentianopsis crinita" (N)
*"Gentianopsis virgata" ssp. "victorinii" (N)
*"Gentianopsis virgata" ssp. "virgata" (N)
*"Geranium bicknellii" (N)
*"Geranium carolinianum" var. "carolinianum" (N)
*"Geranium columbinum" (I)
*"Geranium dissectum" (I)
*"Geranium maculatum" (N)
*"Geranium molle" (I)
*"Geranium pusillum" (I)
*"Geranium robertianum" (I)
*"Geranium robertianum" ssp. "robertianum" (N)
*"Geranium sanguineum" (I)
*"Geum aleppicum" (N)
*"Geum canadense" var. "canadense" (N)
*"Geum laciniatum" var. "laciniatum" (N)
*"Geum rivale" (N)
*"Geum urbanum" (I)
*"Geum vernum" (N)
*"Geum virginianum" (N)
*"Gilia capitata" ssp. "capitata" (N)
*"Gillenia stipulata" (N)
*"Gillenia trifoliata" (N)
*"Gladiolus × gandavensis" (I)
*"Glandularia canadensis" (N)
*"Glandularia × hybrida" (I)
*"Glebionis segetum" (I)
*"Glechoma hederacea" (I)
*"Gleditsia triacanthos" (N)
*"Glyceria acutiflora" (N)
*"Glyceria borealis" (N)
*"Glyceria canadensis" (N)
*"Glyceria grandis" var. "grandis" (N)
*"Glyceria melicaria" (N)
*"Glyceria septentrionalis" (N)
*"Glyceria striata" (N)
*"Glycine max" (I)
*"Gnaphalium uliginosum" (I)
*"Gomphrena globosa" (I)
*"Goodyera pubescens" (N)
*"Goodyera repens" (N)
*"Goodyera tesselata" (N)
*"Gratiola neglecta" (N)
*"Gratiola virginiana" var. "virginiana" (N)
*"Gratiola viscidula" (N)
*"Grindelia lanceolata" var. "lanceolata" (N)
*"Grindelia squarrosa" var. "serrulata" (N)
*"Grindelia squarrosa" var. "squarrosa" (N)
*"Guizotia abyssinica" (I)
*"Gutierrezia texana" var. "texana" (N)
*"Gymnocarpium appalachianum" (N)
*"Gymnocarpium × brittonianum" (N)
*"Gymnocarpium dryopteris" (N)
*"Gymnocladus dioicus" (N)
*"Gymnopogon ambiguus" (N)
*"Gypsophila muralis" (I)
*"Gypsophila paniculata" (I)
*"Gypsophila scorzonerifolia" (I)

H

*"Hackelia deflexa" var. "americana" (N)
*"Hackelia virginiana" (N)
*"Halesia tetraptera" var. "tetraptera" (N)
*"Hamamelis virginiana" (N)
*"Hasteola suaveolens" (N)
*"Hedeoma hispida" (N)
*"Hedeoma pulegioides" (N)
*"Hedera helix" (I)
*"Helenium amarum" var. "amarum" (N)
*"Helenium autumnale" var. "autumnale" (N)
*"Helenium flexuosum" (N)
*"Helianthemum bicknellii" (N)
*"Helianthemum canadense" (N)
*"Helianthus × ambiguus" (N)
*"Helianthus angustifolius" (N)
*"Helianthus annuus" (N)
*"Helianthus × brevifolius" (N)
*"Helianthus × cinereus" (N)
*"Helianthus decapetalus" (N)
*"Helianthus divaricatus" (N)
*"Helianthus × divariserratus" (N)
*"Helianthus × doronicoides" (N)
*"Helianthus giganteus" (N)
*"Helianthus × glaucus" (N)
*"Helianthus grosseserratus" (N)
*"Helianthus hirsutus" (N)
*"Helianthus × intermedius" (N)
*"Helianthus × kellermanii" (N)
*"Helianthus × laetiflorus" (N)
*"Helianthus × luxurians" (N)
*"Helianthus maximiliani" (N)
*"Helianthus microcephalus" (N)
*"Helianthus mollis" (N)
*"Helianthus × multiflorus" (N)
*"Helianthus occidentalis" ssp. "occidentalis" (N)
*"Helianthus petiolaris" ssp. "petiolaris" (N)
*"Helianthus salicifolius" (N)
*"Helianthus strumosus" (N)
*"Helianthus tuberosus" (N)
*"Heliopsis helianthoides" var. "helianthoides" (N)
*"Heliopsis helianthoides" var. "occidentalis" (N)
*"Heliotropium europaeum" (I)
*"Heliotropium indicum" (I)
*"Helleborus viridis" (I)
*"Hemerocallis fulva" (I)
*"Hemerocallis lilioasphodelus" (I)
*"Hepatica nobilis" var. "acuta" (N)
*"Hepatica nobilis" var. "obtusa" (N)
*"Heracleum maximum" (N)
*"Hesperis matronalis" (I)
*"Hesperostipa spartea" (N)
*"Heteranthera dubia" (N)
*"Heteranthera reniformis" (N)
*"Heterotheca camporum" var. "camporum" (N)
*"Heuchera americana" var. "americana" (N)
*"Heuchera americana" var. "hirsuticaulis" (N)
*"Heuchera americana" var. "hispida" (N)
*"Heuchera longiflora" (N)
*"Heuchera parviflora" var. "parviflora" (N)
*"Heuchera villosa" var. "villosa" (N)
*"Hexalectris spicata" var. "spicata" (N)
*"Hibiscus laevis" (N)
*"Hibiscus moscheutos" (N)
*"Hibiscus syriacus" (I)
*"Hibiscus trionum" (I)
*"Hieracium aurantiacum" (I)
*"Hieracium caespitosum" (I)
*"Hieracium × flagellare" var. "flagellare" (I)
*"Hieracium × floribundum" (I)
*"Hieracium greenii" (N)
*"Hieracium gronovii" (N)
*"Hieracium kalmii" var. "fasciculatum" (N)
*"Hieracium kalmii" var. "kalmii" (N)
*"Hieracium longipilum" (N)
*"Hieracium paniculatum" (N)
*"Hieracium pilosella" var. "pilosella" (I)
*"Hieracium piloselloides" (I)
*"Hieracium scabrum" var. "scabrum" (N)
*"Hieracium venosum" (N)
*"Hierochloe hirta" ssp. "arctica" (N)
*"Holcus lanatus" (I)
*"Holosteum umbellatum" (I)
*"Hordeum brachyantherum" ssp. "brachyantherum" (N)
*"Hordeum jubatum" ssp. "jubatum" (N)
*"Hordeum marinum" ssp. "gussonianum" (I)
*"Hordeum pusillum" (N)
*"Hordeum vulgare" (I)
*"Hosta lancifolia" (I)
*"Hosta ventricosa" (I)
*"Hottonia inflata" (N)
*"Houstonia caerulea" (N)
*"Houstonia canadensis" (N)
*"Houstonia longifolia" (N)
*"Houstonia purpurea" var. "calycosa" (N)
*"Houstonia purpurea" var. "purpurea" (N)
*"Hudsonia tomentosa" var. "tomentosa" (N)
*"Humulus japonicus" (I)
*"Humulus lupulus" var. "lupuloides" (N)
*"Humulus lupulus" var. "pubescens" (N)
*"Humulus lupulus" var. "lupulus" (I)
*"Huperzia × bartleyi" (N)
*"Huperzia × buttersii" (N)
*"Huperzia lucidula" (N)
*"Huperzia porophila" (N)
*"Hyacinthoides non-scripta" (I)
*"Hybanthus concolor" (N)
*"Hydrangea arborescens" (N)
*"Hydrastis canadensis" (N)
*"Hydrocotyle americana" (N)
*"Hydrocotyle ranunculoides" (N)
*"Hydrocotyle sibthorpioides" (I)
*"Hydrocotyle umbellata" (N)
*"Hydrophyllum appendiculatum" (N)
*"Hydrophyllum canadense" (N)
*"Hydrophyllum macrophyllum" (N)
*"Hydrophyllum virginianum" var. "virginianum" (N)
*"Hylotelephium telephioides" (N)
*"Hylotelephium telephium" ssp. "telephium" (I)
*"Hypericum ascyron" (N)
*"Hypericum boreale" (N)
*"Hypericum canadense" (N)
*"Hypericum drummondii" (N)
*"Hypericum ellipticum" (N)
*"Hypericum gentianoides" (N)
*"Hypericum gymnanthum" (N)
*"Hypericum hypericoides" ssp. "multicaule" (N)
*"Hypericum kalmianum" (N)
*"Hypericum majus" (N)
*"Hypericum mutilum" (N)
*"Hypericum perforatum" (I)
*"Hypericum prolificum" (N)
*"Hypericum punctatum" (N)
*"Hypericum sphaerocarpum" (N)
*"Hypericum virgatum" (N)
*"Hypochaeris glabra" (I)
*"Hypochaeris radicata" (I)
*"Hypoxis hirsuta" (N)

I

*"Iberis umbellata" (I)
*"Ilex crenata" (I)
*"Ilex mucronata" (N)
*"Ilex opaca" var. "opaca" (N)
*"Ilex verticillata" (N)
*"Impatiens balsamina" (I)
*"Impatiens capensis" (N)
*"Impatiens pallida" (N)
*"Inula helenium" (I)
*"Iodanthus pinnatifidus" (N)
*"Ionactis linariifolius" (N)
*"Ipomoea coccinea" (I)
*"Ipomoea hederacea" (I)
*"Ipomoea lacunosa" (N)
*"Ipomoea pandurata" (N)
*"Ipomoea purpurea" (I)
*"Ipomopsis rubra" (N)
*"Iris brevicaulis" (N)
*"Iris cristata" (N)
*"Iris fulva" (N)
*"Iris germanica" (I)
*"Iris pseudacorus" (I)
*"Iris verna" var. "smalliana" (N)
*"Iris versicolor" (N)
*"Iris virginica" var. "shrevei" (N)
*"Isoetes engelmannii" (N)
*"Isoetes tenella" (N)
*"Isotria medeoloides" (N)
*"Isotria verticillata" (N)
*"Iva annua" var. "annua" (N)

J

*"Jacquemontia tamnifolia" (N)
*"Jeffersonia diphylla" (N)
*"Juglans cinerea" (N)
*"Juglans nigra" (N)
*"Juncus acuminatus" (N)
*"Juncus alpinoarticulatus" ssp. "nodulosus" (N)
*"Juncus anthelatus" (N)
*"Juncus arcticus" ssp. "littoralis" (N)
*"Juncus articulatus" (N)
*"Juncus biflorus" (N)
*"Juncus brachycarpus" (N)
*"Juncus brachycephalus" (N)
*"Juncus bufonius" var. "bufonius" (N)
*"Juncus canadensis" (N)
*"Juncus compressus" (I)
*"Juncus dichotomus" (N)
*"Juncus diffusissimus" (N)
*"Juncus dudleyi" (N)
*"Juncus effusus" var. "decipiens" (N)
*"Juncus effusus" var. "pylaei" (N)
*"Juncus effusus" var. "solutus" (N)
*"Juncus gerardii" var. "gerardii" (N)
*"Juncus greenei" (N)
*"Juncus interior" var. "interior" (N)
*"Juncus marginatus" (N)
*"Juncus nodosus" var. "nodosus" (N)
*"Juncus secundus" (N)
*"Juncus × stuckeyi" (N)
*"Juncus subcaudatus" var. "subcaudatus" (N)
*"Juncus tenuis" (N)
*"Juncus torreyi" (N)
*"Juniperus communis" var. "depressa" (N)
*"Juniperus virginiana" var. "virginiana" (N)
*"Justicia americana" (N)

K

*"Kalmia latifolia" (N)
*"Kerria japonica" (I)
*"Kickxia elatine" (I)
*"Kickxia spuria" (I)
*"Koeleria macrantha" (N)
*"Koelreuteria paniculata" (I)
*"Krigia biflora" var. "biflora" (N)
*"Krigia dandelion" (N)
*"Krigia virginica" (N)
*"Kummerowia stipulacea" (I)
*"Kummerowia striata" (I)
*"Kyllinga pumila" (N)

L

*"Lablab purpureus" (I)
*"Lactuca biennis" (N)
*"Lactuca canadensis" (N)
*"Lactuca floridana" var. "floridana" (N)
*"Lactuca floridana" var. "villosa" (N)
*"Lactuca hirsuta" var. "sanguinea" (N)
*"Lactuca × morssii" (N)
*"Lactuca saligna" (I)
*"Lactuca sativa" (I)
*"Lactuca serriola" (I)
*"Lactuca tatarica" var. "pulchella" (N)
*"Lamium album" (I)
*"Lamium amplexicaule" (I)
*"Lamium maculatum" (I)
*"Lamium purpureum" var. "purpureum" (I)
*"Laportea canadensis" (N)
*"Lappula squarrosa" (I)
*"Lapsana communis" (I)
*"Larix laricina" (N)
*"Lathyrus japonicus" var. "maritimus" (N)
*"Lathyrus japonicus" var. "parviflorus" (N)
*"Lathyrus latifolius" (I)
*"Lathyrus ochroleucus" (N)
*"Lathyrus odoratus" (I)
*"Lathyrus palustris" (N)
*"Lathyrus pratensis" (I)
*"Lathyrus tuberosus" (I)
*"Lathyrus venosus" (N)
*"Leavenworthia uniflora" (N)
*"Lechea intermedia" var. "intermedia" (N)
*"Lechea minor" (N)
*"Lechea mucronata" (N)
*"Lechea pulchella" var. "moniliformis" (N)
*"Lechea pulchella" var. "pulchella" (N)
*"Lechea racemulosa" (N)
*"Lechea tenuifolia" (N)
*"Ledum groenlandicum" (N)
*"Leersia lenticularis" (N)
*"Leersia oryzoides" (N)
*"Leersia virginica" (N)
*"Lemna minor" (N)
*"Lemna minuta" (N)
*"Lemna obscura" (N)
*"Lemna perpusilla" (N)
*"Lemna trisulca" (N)
*"Lemna turionifera" (N)
*"Lemna valdiviana" (N)
*"Leontodon autumnalis" ssp. "autumnalis" (I)
*"Leontodon autumnalis" ssp. "pratensis" (I)
*"Leontodon hispidus" ssp. "danubialis" (I)
*"Leontodon taraxacoides" ssp. "taraxacoides" (I)
*"Leonurus cardiaca" ssp. "cardiaca" (I)
*"Leonurus sibiricus" (I)
*"Lepidium campestre" (I)
*"Lepidium densiflorum" var. "densiflorum" (N)
*"Lepidium perfoliatum" (I)
*"Lepidium ramosissimum" var. "bourgeauanum" (N)
*"Lepidium ruderale" (I)
*"Lepidium sativum" (I)
*"Lepidium virginicum" var. "virginicum" (N)
*"Leptochloa fusca" ssp. "fascicularis" (N)
*"Leptochloa panicea" ssp. "brachiata" (N)
*"Lespedeza × acuticarpa" (N)
*"Lespedeza bicolor" (I)
*"Lespedeza × brittonii" (N)
*"Lespedeza capitata" (N)
*"Lespedeza cuneata" (I)
*"Lespedeza formosa" (I)
*"Lespedeza frutescens" (N)
*"Lespedeza hirta" ssp. "hirta" (N)
*"Lespedeza × nuttallii" (N)
*"Lespedeza procumbens" (N)
*"Lespedeza repens" (N)
*"Lespedeza thunbergii" (I)
*"Lespedeza violacea" (N)
*"Lespedeza virginica" (N)
*"Lesquerella globosa" (N)
*"Leucanthemum maximum" (I)
*"Leucanthemum vulgare" (I)
*"Leucojum aestivum" ssp. "aestivum" (I)
*"Leucospora multifida" (N)
*"Levisticum officinale" (I)
*"Liatris aspera" var. "aspera" (N)
*"Liatris aspera" var. "intermedia" (N)
*"Liatris cylindracea" (N)
*"Liatris punctata" var. "punctata" (N)
*"Liatris pycnostachya" var. "pycnostachya" (N)
*"Liatris scariosa" var. "nieuwlandii" (N)
*"Liatris spheroidea" (N)
*"Liatris spicata" var. "spicata" (N)
*"Liatris squarrosa" var. "squarrosa" (N)
*"Liatris squarrulosa" (N)
*"Ligusticum canadense" (N)
*"Ligustrum obtusifolium" (I)
*"Ligustrum ovalifolium" (I)
*"Ligustrum vulgare" (I)
*"Lilium canadense" ssp. "canadense" (N)
*"Lilium canadense" ssp. "editorum" (N)
*"Lilium lancifolium" (I)
*"Lilium michiganense" (N)
*"Lilium philadelphicum" var. "andinum" (N)
*"Lilium philadelphicum" var. "philadelphicum" (N)
*"Lilium superbum" (N)
*"Linaria dalmatica" ssp. "dalmatica" (I)
*"Linaria genistifolia" (I)
*"Linaria vulgaris" (I)
*"Lindera benzoin" var. "benzoin" (N)
*"Lindera benzoin" var. "pubescens" (N)
*"Lindernia dubia" var. "anagallidea" (N)
*"Lindernia dubia" var. "dubia" (N)
*"Linnaea borealis" ssp. "americana" (N)
*"Linum grandiflorum" (I)
*"Linum medium" var. "texanum" (N)
*"Linum perenne" (I)
*"Linum perenne" (N)
*"Linum striatum" (N)
*"Linum sulcatum" var. "sulcatum" (N)
*"Linum usitatissimum" (I)
*"Linum virginianum" (N)
*"Liparis liliifolia" (N)
*"Liparis loeselii" (N)
*"Lipocarpha drummondii" (N)
*"Lipocarpha micrantha" (N)
*"Liquidambar styraciflua" (N)
*"Liriodendron tulipifera" (N)
*"Listera cordata" var. "cordata" (N)
*"Lithospermum canescens" (N)
*"Lithospermum caroliniense" var. "croceum" (N)
*"Lithospermum latifolium" (N)
*"Lithospermum officinale" (I)
*"Lobelia cardinalis" (N)
*"Lobelia inflata" (N)
*"Lobelia kalmii" (N)
*"Lobelia puberula" var. "simulans" (N)
*"Lobelia siphilitica" var. "siphilitica" (N)
*"Lobelia spicata" var. "campanulata" (N)
*"Lobelia spicata" var. "leptostachys" (N)
*"Lobelia spicata" var. "spicata" (N)
*"Lobularia maritima" (I)
*"Lolium perenne" ssp. "multiflorum" (I)
*"Lolium perenne" ssp. "perenne" (I)
*"Lolium temulentum" ssp. "temulentum" (I)
*"Lonicera × bella" (I)
*"Lonicera canadensis" (N)
*"Lonicera dioica" (N)
*"Lonicera flava" (N)
*"Lonicera fragrantissima" (I)
*"Lonicera japonica" (I)
*"Lonicera × minutiflora" (I)
*"Lonicera morrowii" (I)
*"Lonicera maackii" (I)
*"Lonicera oblongifolia" (N)
*"Lonicera reticulata" (N)
*"Lonicera ruprechtiana" (I)
*"Lonicera × salicifolia" (I)
*"Lonicera sempervirens" (N)
*"Lonicera tatarica" (I)
*"Lonicera villosa" var. "tonsa" (N)
*"Lonicera × xylosteoides" (I)
*"Lonicera xylosteum" (I)
*"Lotus corniculatus" var. "corniculatus" (I)
*"Lotus glaber" (I)
*"Ludwigia alternifolia" (N)
*"Ludwigia decurrens" (N)
*"Ludwigia leptocarpa" (N)
*"Ludwigia palustris" (N)
*"Ludwigia peploides" (I)
*"Ludwigia peploides" ssp. "glabrescens" (N)
*"Ludwigia polycarpa" (N)
*"Lunaria annua" (I)
*"Lupinus perennis" ssp. "perennis" var. "occidentalis" (N)
*"Lupinus perennis" ssp. "perennis" var. "perennis" (N)
*"Lupinus perennis" ssp. "perennis" (N)
*"Luzula acuminata" ssp. "acuminata" (N)
*"Luzula acuminata" ssp. "carolinae" (N)
*"Luzula bulbosa" (N)
*"Luzula echinata" (N)
*"Luzula multiflora" ssp. "multiflora" var. "multiflora" (N)
*"Luzula multiflora" ssp. "multiflora" (N)
*"Lychnis coronaria" (I)
*"Lychnis flos-cuculi" (I)
*"Lychnis viscaria" (I)
*"Lycium barbarum" (I)
*"Lycium chinense" (I)
*"Lycopodiella inundata" (N)
*"Lycopodiella margueritiae" (N)
*"Lycopodiella subappressa" (N)
*"Lycopodium clavatum" (N)
*"Lycopodium dendroideum" (N)
*"Lycopodium digitatum" (N)
*"Lycopodium × habereri" (N)
*"Lycopodium hickeyi" (N)
*"Lycopodium lagopus" (N)
*"Lycopodium obscurum" (N)
*"Lycopodium tristachyum" (N)
*"Lycopus americanus" (N)
*"Lycopus asper" (N)
*"Lycopus europaeus" (I)
*"Lycopus rubellus" (N)
*"Lycopus × sherardii" (N)
*"Lycopus uniflorus" var. "uniflorus" (N)
*"Lycopus virginicus" (N)
*"Lycoris squamigera" (I)
*"Lygodium palmatum" (N)
*"Lyonia ligustrina" var. "ligustrina" (N)
*"Lysimachia ciliata" (N)
*"Lysimachia lanceolata" (N)
*"Lysimachia nummularia" (I)
*"Lysimachia × producta" (N)
*"Lysimachia punctata" (I)
*"Lysimachia quadriflora" (N)
*"Lysimachia quadrifolia" (N)
*"Lysimachia terrestris" (N)
*"Lysimachia thyrsiflora" (N)
*"Lysimachia vulgaris" (I)
*"Lythrum alatum" var. "alatum" (N)
*"Lythrum hyssopifolium" (I)
*"Lythrum portula" (I)
*"Lythrum salicaria" (I)

M

*"Macleaya cordata" (I)
*"Maclura pomifera" (N)
*"Magnolia acuminata" (N)
*"Magnolia fraseri" (N)
*"Magnolia macrophylla" (N)
*"Magnolia × soulangiana" (I)
*"Magnolia stellata" (I)
*"Magnolia tripetala" (N)
*"Mahonia aquifolium" (N)
*"Maianthemum canadense" (N)
*"Maianthemum racemosum" ssp. "racemosum" (N)
*"Maianthemum stellatum" (N)
*"Maianthemum trifolium" (N)
*"Malaxis unifolia" (N)
*"Malus angustifolia" var. "angustifolia" (N)
*"Malus baccata" (I)
*"Malus coronaria" (N)
*"Malus floribunda" (I)
*"Malus ioensis" var. "ioensis" (N)
*"Malus × platycarpa" (N)
*"Malus pumila" (I)
*"Malus toringo" (I)
*"Malus zumi" (I)
*"Malva alcea" (I)
*"Malva moschata" (I)
*"Malva neglecta" (I)
*"Malva pusilla" (I)
*"Malva sylvestris" (I)
*"Malva verticillata" (I)
*"Manfreda virginica" (N)
*"Marrubium vulgare" (I)
*"Marsilea quadrifolia" (I)
*"Marsilea quadrifolia" (N)
*"Matelea obliqua" (N)
*"Matricaria discoidea" (I)
*"Matricaria recutita" (I)
*"Matteuccia struthiopteris" (N)
*"Mazus pumilus" (I)
*"Medeola virginiana" (N)
*"Medicago lupulina" (I)
*"Medicago polymorpha" (I)
*"Medicago sativa" ssp. "falcata" (I)
*"Medicago sativa" ssp. "sativa" (I)
*"Meehania cordata" (N)
*"Melampyrum lineare" var. "latifolium" (N)
*"Melampyrum lineare" var. "lineare" (N)
*"Melica nitens" (N)
*"Melilotus altissimus" (I)
*"Melilotus officinalis" (I)
*"Melissa officinalis" (I)
*"Menispermum canadense" (N)
*"Mentha aquatica" (I)
*"Mentha arvensis" (N)
*"Mentha × gracilis" (I)
*"Mentha × piperita" (N)
*"Mentha × rotundifolia" (I)
*"Mentha spicata" (I)
*"Mentha suaveolens" (I)
*"Mentha × villosa" (I)
*"Menyanthes trifoliata" (N)
*"Mercurialis annua" (I)
*"Mertensia virginica" (N)
*"Microstegium vimineum" (I)
*"Microthlaspi perfoliatum" (I)
*"Mikania scandens" (N)
*"Milium effusum" var. "cisatlanticum" (N)
*"Mimulus alatus" (N)
*"Mimulus ringens" var. "ringens" (N)
*"Minuartia michauxii" var. "michauxii" (N)
*"Minuartia patula" (N)
*"Mirabilis albida" (N)
*"Mirabilis hirsuta" (N)
*"Mirabilis jalapa" (I)
*"Mirabilis nyctaginea" (N)
*"Miscanthus sinensis" (I)
*"Misopates orontium" (I)
*"Mitchella repens" (N)
*"Mitella diphylla" (N)
*"Moehringia lateriflora" (N)
*"Moehringia trinervia" (I)
*"Mollugo verticillata" (N)
*"Monarda clinopodia" (N)
*"Monarda didyma" (N)
*"Monarda fistulosa" ssp. "fistulosa" var. "fistulosa" (N)
*"Monarda fistulosa" ssp. "fistulosa" var. "mollis" (N)
*"Monarda fistulosa" ssp. "fistulosa" (N)
*"Monarda media" (N)
*"Monarda punctata" ssp. "punctata" var. "villicaulis" (N)
*"Monarda punctata" ssp. "punctata" (N)
*"Moneses uniflora" (N)
*"Monolepis nuttalliana" (N)
*"Monotropa hypopithys" (N)
*"Monotropa uniflora" (N)
*"Morella pensylvanica" (N)
*"Morus alba" (I)
*"Morus nigra" (I)
*"Morus rubra" var. "rubra" (N)
*"Muhlenbergia asperifolia" (N)
*"Muhlenbergia capillaris" (N)
*"Muhlenbergia × curtisetosa" (N)
*"Muhlenbergia cuspidata" (N)
*"Muhlenbergia frondosa" (N)
*"Muhlenbergia glomerata" (N)
*"Muhlenbergia mexicana" (N)
*"Muhlenbergia schreberi" (N)
*"Muhlenbergia sobolifera" (N)
*"Muhlenbergia sylvatica" (N)
*"Muhlenbergia tenuiflora" (N)
*"Muscari armeniacum" (I)
*"Muscari botryoides" (I)
*"Muscari comosum" (I)
*"Muscari neglectum" (I)
*"Myagrum perfoliatum" (I)
*"Myosotis arvensis" (I)
*"Myosotis discolor" (I)
*"Myosotis laxa" (N)
*"Myosotis macrosperma" (N)
*"Myosotis scorpioides" (I)
*"Myosotis stricta" (I)
*"Myosotis sylvatica" (I)
*"Myosotis verna" (N)
*"Myosoton aquaticum" (I)
*"Myosurus minimus" (N)
*"Myriophyllum aquaticum" (I)
*"Myriophyllum heterophyllum" (N)
*"Myriophyllum humile" (N)
*"Myriophyllum pinnatum" (N)
*"Myriophyllum sibiricum" (N)
*"Myriophyllum spicatum" (I)
*"Myriophyllum verticillatum" (N)

N

*"Najas flexilis" (N)
*"Najas gracillima" (N)
*"Najas guadalupensis" ssp. "guadalupensis" (N)
*"Najas marina" (N)
*"Najas minor" (I)
*"Napaea dioica" (N)
*"Narcissus × incomparabilis" (I)
*"Narcissus jonquilla" (I)
*"Narcissus × medioluteus" (I)
*"Narcissus poeticus" (I)
*"Narcissus pseudonarcissus" (I)
*"Nasturtium officinale" (I)
*"Navarretia intertexta" ssp. "propinqua" (N)
*"Nelumbo lutea" (N)
*"Nelumbo nucifera" (I)
*"Neobeckia aquatica" (N)
*"Nepeta cataria" (I)
*"Neslia paniculata" (I)
*"Nicandra physalodes" (I)
*"Nicotiana alata" (I)
*"Nicotiana glauca" (I)
*"Nicotiana rustica" (I)
*"Nicotiana tabacum" (I)
*"Nigella damascena" (I)
*"Nothoscordum bivalve" (N)
*"Nuphar lutea" ssp. "advena" (N)
*"Nuphar lutea" ssp. "variegata" (N)
*"Nuttallanthus canadensis" (N)
*"Nymphaea odorata" ssp. "odorata" (N)
*"Nymphaea odorata" ssp. "tuberosa" (N)
*"Nymphoides peltata" (I)
*"Nyssa sylvatica" (N)

O

*"Obolaria virginica" (N)
*"Oclemena acuminata" (N)
*"Oenanthe aquatica" (I)
*"Oenothera biennis" (N)
*"Oenothera clelandii" (N)
*"Oenothera fruticosa" ssp. "fruticosa" (N)
*"Oenothera fruticosa" ssp. "glauca" (N)
*"Oenothera laciniata" (N)
*"Oenothera nutans" (N)
*"Oenothera oakesiana" (N)
*"Oenothera parviflora" (N)
*"Oenothera perennis" (N)
*"Oenothera pilosella" ssp. "pilosella" (N)
*"Oenothera speciosa" (N)
*"Oenothera triloba" (N)
*"Oenothera villosa" ssp. "villosa" (N)
*"Oligoneuron album" (N)
*"Oligoneuron ohioense" (N)
*"Oligoneuron riddellii" (N)
*"Oligoneuron rigidum" var. "glabratum" (N)
*"Oligoneuron rigidum" var. "rigidum" (N)
*"Onoclea sensibilis" (N)
*"Onopordum acanthium" (I)
*"Onosmodium bejariense" var. "hispidissimum" (N)
*"Ophioglossum engelmannii" (N)
*"Ophioglossum pusillum" (N)
*"Ophioglossum vulgatum" (N)
*"Opuntia humifusa" (N)
*"Opuntia macrorhiza" var. "macrorhiza" (N)
*"Orbexilum onobrychis" (N)
*"Orbexilum pedunculatum" var. "pedunculatum" (N)
*"Origanum vulgare" (I)
*"Ornithogalum nutans" (I)
*"Ornithogalum umbellatum" (I)
*"Orobanche ludoviciana" ssp. "ludoviciana" (N)
*"Orobanche uniflora" (N)
*"Orthilia secunda" (N)
*"Oryzopsis asperifolia" (N)
*"Osmorhiza claytonii" (N)
*"Osmorhiza longistylis" (N)
*"Osmunda cinnamomea" var. "cinnamomea" (N)
*"Osmunda claytoniana" (N)
*"Osmunda regalis" var. "spectabilis" (N)
*"Ostrya virginiana" var. "virginiana" (N)
*"Oxalis corniculata" (N)
*"Oxalis dillenii" (N)
*"Oxalis grandis" (N)
*"Oxalis montana" (N)
*"Oxalis stricta" (N)
*"Oxalis violacea" (N)
*"Oxydendrum arboreum" (N)
*"Oxypolis rigidior" (N)

P

*"Pachysandra terminalis" (I)
*"Packera anonyma" (N)
*"Packera aurea" (N)
*"Packera glabella" (N)
*"Packera obovata" (N)
*"Packera paupercula" (N)
*"Packera plattensis" (N)
*"Panax quinquefolius" (N)
*"Panax trifolius" (N)
*"Panicum anceps" (N)
*"Panicum capillare" (N)
*"Panicum dichotomiflorum" var. "dichotomiflorum" (N)
*"Panicum flexile" (N)
*"Panicum gattingeri" (N)
*"Panicum miliaceum" ssp. "miliaceum" (I)
*"Panicum philadelphicum" (N)
*"Panicum rigidulum" var. "elongatum" (N)
*"Panicum rigidulum" var. "pubescens" (N)
*"Panicum rigidulum" var. "rigidulum" (N)
*"Panicum verrucosum" (N)
*"Panicum virgatum" var. "virgatum" (N)
*"Papaver argemone" (I)
*"Papaver dubium" (I)
*"Papaver rhoeas" (I)
*"Papaver somniferum" (I)
*"Parietaria pensylvanica" (N)
*"Parnassia glauca" (N)
*"Paronychia canadensis" (N)
*"Paronychia fastigiata" var. "fastigiata" (N)
*"Parthenium hysterophorus" (I)
*"Parthenium integrifolium" var. "integrifolium" (N)
*"Parthenocissus quinquefolia" (N)
*"Parthenocissus tricuspidata" (I)
*"Parthenocissus vitacea" (N)
*"Pascopyrum smithii" (N)
*"Paspalum floridanum" (N)
*"Paspalum fluitans" (N)
*"Paspalum laeve" (N)
*"Paspalum pubiflorum" (N)
*"Paspalum setaceum" (N)
*"Passiflora incarnata" (N)
*"Passiflora lutea" (N)
*"Pastinaca sativa" (I)
*"Paulownia tomentosa" (I)
*"Paxistima canbyi" (N)
*"Pedicularis canadensis" ssp. "canadensis" (N)
*"Pedicularis lanceolata" (N)
*"Pellaea atropurpurea" (N)
*"Pellaea glabella" ssp. "glabella" (N)
*"Peltandra virginica" (N)
*"Pennisetum glaucum" (I)
*"Penstemon alluviorum" (N)
*"Penstemon calycosus" (N)
*"Penstemon canescens" (N)
*"Penstemon cobaea" (N)
*"Penstemon digitalis" (N)
*"Penstemon grandiflorus" (N)
*"Penstemon hirsutus" (N)
*"Penstemon laevigatus" (N)
*"Penstemon pallidus" (N)
*"Penstemon tubiflorus" var. "tubiflorus" (N)
*"Penthorum sedoides" (N)
*"Perideridia americana" (N)
*"Perilla frutescens" var. "frutescens" (I)
*"Petasites hybridus" (I)
*"Petrorhagia prolifera" (I)
*"Petrorhagia saxifraga" (I)
*"Petroselinum crispum" (I)
*"Petunia × atkinsiana" (I)
*"Petunia axillaris" (I)
*"Phacelia bipinnatifida" (N)
*"Phacelia dubia" var. "dubia" (N)
*"Phacelia purshii" (N)
*"Phacelia ranunculacea" (N)
*"Phalaris arundinacea" (N)
*"Phalaris canariensis" (I)
*"Phalaris caroliniana" (N)
*"Phaseolus coccineus" (I)
*"Phaseolus polystachios" var. "polystachios" (N)
*"Phaseolus vulgaris" (I)
*"Phegopteris connectilis" (N)
*"Phegopteris hexagonoptera" (N)
*"Phellodendron amurense" (I)
*"Philadelphus coronarius" (I)
*"Philadelphus inodorus" (N)
*"Philadelphus pubescens" var. "pubescens" (N)
*"Philadelphus tomentosus" (I)
*"Phleum pratense" (I)
*"Phlox divaricata" ssp. "divaricata" (N)
*"Phlox glaberrima" ssp. "triflora" (N)
*"Phlox latifolia" (N)
*"Phlox maculata" ssp. "maculata" (N)
*"Phlox maculata" ssp. "pyramidalis" (N)
*"Phlox paniculata" (N)
*"Phlox pilosa" ssp. "pilosa" (N)
*"Phlox stolonifera" (N)
*"Phlox subulata" ssp. "brittonii" (N)
*"Phlox subulata" ssp. "subulata" (N)
*"Phoradendron leucarpum" (N)
*"Photinia floribunda" (N)
*"Photinia melanocarpa" (N)
*"Phragmites australis" (N)
*"Phryma leptostachya" (N)
*"Phyla lanceolata" (N)
*"Phyllanthus caroliniensis" ssp. "caroliniensis" (N)
*"Physalis alkekengi" (I)
*"Physalis grisea" (N)
*"Physalis heterophylla" var. "heterophylla" (N)
*"Physalis hispida" (N)
*"Physalis longifolia" var. "longifolia" (N)
*"Physalis longifolia" var. "subglabrata" (N)
*"Physalis philadelphica" var. "immaculata" (I)
*"Physalis pubescens" var. "integrifolia" (N)
*"Physalis pubescens" var. "pubescens" (N)
*"Physalis virginiana" var. "virginiana" (N)
*"Physocarpus opulifolius" var. "intermedius" (N)
*"Physocarpus opulifolius" var. "opulifolius" (N)
*"Physostegia virginiana" ssp. "praemorsa" (N)
*"Physostegia virginiana" ssp. "virginiana" (N)
*"Phytolacca americana" var. "americana" (N)
*"Picea abies" (I)
*"Picris echioides" (I)
*"Picris hieracioides" (N)
*"Picris hieracioides" ssp. "hieracioides" (I)
*"Pilea fontana" (N)
*"Pilea pumila" var. "pumila" (N)
*"Pimpinella saxifraga" ssp. "saxifraga" (I)
*"Pinellia ternata" (I)
*"Pinus banksiana" (N)
*"Pinus echinata" (N)
*"Pinus nigra" (I)
*"Pinus rigida" (N)
*"Pinus strobus" (N)
*"Pinus sylvestris" (I)
*"Pinus virginiana" (N)
*"Piptatherum racemosum" (N)
*"Piptochaetium avenaceum" (N)
*"Pistia stratiotes" (N)
*"Pityopsis graminifolia" var. "latifolia" (N)
*"Plantago aristata" (N)
*"Plantago cordata" (N)
*"Plantago lanceolata" (I)
*"Plantago major" (I)
*"Plantago patagonica" (N)
*"Plantago psyllium" (I)
*"Plantago rugelii" var. "rugelii" (N)
*"Plantago virginica" (N)
*"Platanthera × andrewsii" (N)
*"Platanthera aquilonis" (N)
*"Platanthera blephariglottis" var. "blephariglottis" (N)
*"Platanthera ciliaris" (N)
*"Platanthera clavellata" (N)
*"Platanthera flava" var. "herbiola" (N)
*"Platanthera grandiflora" (N)
*"Platanthera hookeri" (N)
*"Platanthera lacera" (N)
*"Platanthera leucophaea" (N)
*"Platanthera orbiculata" (N)
*"Platanthera peramoena" (N)
*"Platanthera psycodes" (N)
*"Platanus occidentalis" (N)
*"Pleopeltis polypodioides" ssp. "michauxiana" (N)
*"Pluchea camphorata" (N)
*"Poa alsodes" (N)
*"Poa annua" (I)
*"Poa arida" (N)
*"Poa bulbosa" (I)
*"Poa chapmaniana" (N)
*"Poa compressa" (I)
*"Poa cuspidata" (N)
*"Poa nemoralis" (N)
*"Poa nemoralis" ssp. "nemoralis" (I)
*"Poa paludigena" (N)
*"Poa palustris" (N)
*"Poa pratensis" (I)
*"Poa pratensis" ssp. "pratensis" (N)
*"Poa saltuensis" (N)
*"Poa sylvestris" (N)
*"Poa trivialis" (I)
*"Poa wolfii" (N)
*"Podophyllum peltatum" (N)
*"Podostemum ceratophyllum" (N)
*"Pogonia ophioglossoides" (N)
*"Polanisia dodecandra" ssp. "dodecandra" (N)
*"Polanisia dodecandra" ssp. "trachysperma" (N)
*"Polanisia jamesii" (N)
*"Polemonium caeruleum" (I)
*"Polemonium reptans" var. "reptans" (N)
*"Polemonium reptans" var. "villosum" (N)
*"Polygala ambigua" (N)
*"Polygala cruciata" var. "aquilonia" (N)
*"Polygala curtissii" (N)
*"Polygala incarnata" (N)
*"Polygala paucifolia" (N)
*"Polygala polygama" (N)
*"Polygala sanguinea" (N)
*"Polygala senega" (N)
*"Polygala verticillata" var. "isocycla" (N)
*"Polygala verticillata" var. "verticillata" (N)
*"Polygonatum biflorum" var. "commutatum" (N)
*"Polygonatum pubescens" (N)
*"Polygonum achoreum" (N)
*"Polygonum amphibium" var. "emersum" (N)
*"Polygonum amphibium" var. "stipulaceum" (N)
*"Polygonum arenastrum" (I)
*"Polygonum arifolium" (N)
*"Polygonum aviculare" (I)
*"Polygonum buxiforme" (N)
*"Polygonum careyi" (N)
*"Polygonum cespitosum" var. "longisetum" (I)
*"Polygonum cilinode" (N)
*"Polygonum convolvulus" var. "convolvulus" (I)
*"Polygonum cuspidatum" (I)
*"Polygonum erectum" (N)
*"Polygonum fowleri" ssp. "fowleri" (N)
*"Polygonum hydropiper" (I)
*"Polygonum hydropiperoides" (N)
*"Polygonum lapathifolium" (N)
*"Polygonum orientale" (I)
*"Polygonum pensylvanicum" (N)
*"Polygonum perfoliatum" (I)
*"Polygonum persicaria" (I)
*"Polygonum punctatum" var. "confertiflorum" (N)
*"Polygonum punctatum" var. "punctatum" (N)
*"Polygonum ramosissimum" var. "ramosissimum" (N)
*"Polygonum robustius" (N)
*"Polygonum sachalinense" (I)
*"Polygonum sagittatum" (N)
*"Polygonum scandens" var. "cristatum" (N)
*"Polygonum scandens" var. "dumetorum" (N)
*"Polygonum scandens" var. "scandens" (N)
*"Polygonum scandens" var. "dumetorum" (I)
*"Polygonum setaceum" (N)
*"Polygonum tenue" (N)
*"Polygonum virginianum" (N)
*"Polymnia canadensis" (N)
*"Polypodium appalachianum" (N)
*"Polypodium virginianum" (N)
*"Polystichum acrostichoides" var. "acrostichoides" (N)
*"Pontederia cordata" (N)
*"Populus alba" (I)
*"Populus balsamifera" ssp. "balsamifera" (N)
*"Populus × canadensis" (N)
*"Populus × canescens" (I)
*"Populus deltoides" ssp. "deltoides" (N)
*"Populus deltoides" ssp. "monilifera" (N)
*"Populus grandidentata" (N)
*"Populus heterophylla" (N)
*"Populus × jackii" (N)
*"Populus nigra" (I)
*"Populus × smithii" (N)
*"Populus tremuloides" (N)
*"Portulaca grandiflora" (I)
*"Portulaca oleracea" (I)
*"Portulaca oleracea" (N)
*"Potamogeton amplifolius" (N)
*"Potamogeton crispus" (I)
*"Potamogeton diversifolius" (N)
*"Potamogeton epihydrus" (N)
*"Potamogeton foliosus" ssp. "foliosus" (N)
*"Potamogeton friesii" (N)
*"Potamogeton gramineus" (N)
*"Potamogeton × hagstroemii" (N)
*"Potamogeton hillii" (N)
*"Potamogeton illinoensis" (N)
*"Potamogeton natans" (N)
*"Potamogeton nodosus" (N)
*"Potamogeton perfoliatus" (N)
*"Potamogeton praelongus" (N)
*"Potamogeton pulcher" (N)
*"Potamogeton pusillus" ssp. "pusillus" (N)
*"Potamogeton pusillus" ssp. "tenuissimus" (N)
*"Potamogeton × rectifolius" (N)
*"Potamogeton richardsonii" (N)
*"Potamogeton robbinsii" (N)
*"Potamogeton spirillus" (N)
*"Potamogeton strictifolius" (N)
*"Potamogeton tennesseensis" (N)
*"Potamogeton vaseyi" (N)
*"Potamogeton zosteriformis" (N)
*"Potentilla argentea" var. "argentea" (I)
*"Potentilla arguta" ssp. "arguta" (N)
*"Potentilla canadensis" var. "canadensis" (N)
*"Potentilla canadensis" var. "villosissima" (N)
*"Potentilla inclinata" (I)
*"Potentilla intermedia" (I)
*"Potentilla norvegica" ssp. "monspeliensis" (N)
*"Potentilla paradoxa" (N)
*"Potentilla pensylvanica" var. "pensylvanica" (N)
*"Potentilla recta" (I)
*"Potentilla reptans" (I)
*"Potentilla simplex" (N)
*"Prenanthes alba" (N)
*"Prenanthes altissima" (N)
*"Prenanthes aspera" (N)
*"Prenanthes crepidinea" (N)
*"Prenanthes racemosa" var. "racemosa" (N)
*"Prenanthes serpentaria" (N)
*"Prenanthes trifoliolata" (N)
*"Proboscidea louisianica" ssp. "louisianica" (N)
*"Prosartes lanuginosa" (N)
*"Prosartes maculata" (N)
*"Proserpinaca palustris" var. "amblyogona" (N)
*"Proserpinaca palustris" var. "crebra" (N)
*"Prunella laciniata" (I)
*"Prunella vulgaris" ssp. "lanceolata" (N)
*"Prunus americana" (N)
*"Prunus avium" (I)
*"Prunus cerasifera" (I)
*"Prunus cerasus" (I)
*"Prunus domestica" var. "domestica" (I)
*"Prunus hortulana" (N)
*"Prunus mahaleb" (I)
*"Prunus mexicana" (N)
*"Prunus munsoniana" (N)
*"Prunus nigra" (N)
*"Prunus pensylvanica" var. "pensylvanica" (N)
*"Prunus persica" var. "persica" (I)
*"Prunus pumila" var. "pumila" (N)
*"Prunus serotina" var. "serotina" (N)
*"Prunus subhirtella" (I)
*"Prunus susquehanae" (N)
*"Prunus tomentosa" (I)
*"Prunus virginiana" var. "virginiana" (N)
*"Pseudognaphalium macounii" (N)
*"Pseudognaphalium obtusifolium" ssp. "obtusifolium" (N)
*"Pseudolysimachion longifolium" (I)
*"Ptelea trifoliata" ssp. "trifoliata" var. "trifoliata" (N)
*"Ptelea trifoliata" ssp. "trifoliata" (N)
*"Pteridium aquilinum" var. "latiusculum" (N)
*"Pteridium aquilinum" var. "pseudocaudatum" (N)
*"Puccinellia distans" (N)
*"Puccinellia distans" ssp. "distans" (I)
*"Pueraria montana" var. "lobata" (I)
*"Pycnanthemum incanum" var. "incanum" (N)
*"Pycnanthemum incanum" var. "puberulum" (N)
*"Pycnanthemum muticum" (N)
*"Pycnanthemum pycnanthemoides" var. "pycnanthemoides" (N)
*"Pycnanthemum tenuifolium" (N)
*"Pycnanthemum verticillatum" var. "pilosum" (N)
*"Pycnanthemum verticillatum" var. "verticillatum" (N)
*"Pycnanthemum virginianum" (N)
*"Pyracantha coccinea" (I)
*"Pyracantha coccinea" (N)
*"Pyrola americana" (N)
*"Pyrola asarifolia" ssp. "asarifolia" (N)
*"Pyrola chlorantha" (N)
*"Pyrola elliptica" (N)
*"Pyrus calleryana" (I)
*"Pyrus communis" (I)

Q

*"Quercus alba" (N)
*"Quercus × bebbiana" (N)
*"Quercus bicolor" (N)
*"Quercus × bushii" (N)
*"Quercus coccinea" var. "coccinea" (N)
*"Quercus coccinea" var. "tuberculata" (N)
*"Quercus × deamii" (N)
*"Quercus ellipsoidalis" (N)
*"Quercus × exacta" (N)
*"Quercus falcata" (N)
*"Quercus × fontana" (N)
*"Quercus × hawkinsiae" (N)
*"Quercus imbricaria" (N)
*"Quercus × jackiana" (N)
*"Quercus × leana" (N)
*"Quercus macrocarpa" var. "macrocarpa" (N)
*"Quercus marilandica" var. "marilandica" (N)
*"Quercus muehlenbergii" (N)
*"Quercus × mutabilis" (N)
*"Quercus × palaeolithicola" (N)
*"Quercus palustris" (N)
*"Quercus prinus" (N)
*"Quercus robur" (I)
*"Quercus rubra" var. "ambigua" (N)
*"Quercus rubra" var. "rubra" (N)
*"Quercus × runcinata" (N)
*"Quercus × saulii" (N)
*"Quercus × schuettei" (N)
*"Quercus shumardii" var. "schneckii" (N)
*"Quercus shumardii" var. "shumardii" (N)
*"Quercus stellata" (N)
*"Quercus × tridentata" (N)
*"Quercus velutina" (N)

R

*"Ranunculus abortivus" (N)
*"Ranunculus acris" var. "acris" (N)
*"Ranunculus acris" var. "acris" (I)
*"Ranunculus allegheniensis" (N)
*"Ranunculus ambigens" (N)
*"Ranunculus arvensis" (I)
*"Ranunculus bulbosus" (I)
*"Ranunculus fascicularis" (N)
*"Ranunculus ficaria" var. "bulbifera" (I)
*"Ranunculus flabellaris" (N)
*"Ranunculus hispidus" var. "caricetorum" (N)
*"Ranunculus hispidus" var. "hispidus" (N)
*"Ranunculus hispidus" var. "nitidus" (N)
*"Ranunculus longirostris" (N)
*"Ranunculus micranthus" (N)
*"Ranunculus parviflorus" (I)
*"Ranunculus pensylvanicus" (N)
*"Ranunculus pusillus" var. "pusillus" (N)
*"Ranunculus recurvatus" var. "recurvatus" (N)
*"Ranunculus repens" (I)
*"Ranunculus sceleratus" var. "sceleratus" (N)
*"Raphanus raphanistrum" (I)
*"Raphanus sativus" (I)
*"Ratibida columnifera" (N)
*"Ratibida pinnata" (N)
*"Reseda alba" (I)
*"Reseda lutea" (I)
*"Reseda luteola" (I)
*"Rhamnus alnifolia" (N)
*"Rhamnus cathartica" (I)
*"Rhamnus davurica" ssp. "davurica" (I)
*"Rhamnus lanceolata" ssp. "glabrata" (N)
*"Rhamnus lanceolata" ssp. "lanceolata" (N)
*"Rhamnus utilis" (I)
*"Rheum rhabarbarum" (I)
*"Rhexia virginica" (N)
*"Rhododendron calendulaceum" (N)
*"Rhododendron maximum" (N)
*"Rhododendron periclymenoides" (N)
*"Rhododendron prinophyllum" (N)
*"Rhodotypos scandens" (I)
*"Rhus aromatica" var. "arenaria" (N)
*"Rhus aromatica" var. "aromatica" (N)
*"Rhus copallinum" var. "latifolia" (N)
*"Rhus glabra" (N)
*"Rhus pulvinata" (N)
*"Rhus typhina" (N)
*"Rhynchospora alba" (N)
*"Rhynchospora capillacea" (N)
*"Rhynchospora capitellata" (N)
*"Rhynchospora recognita" (N)
*"Ribes americanum" (N)
*"Ribes aureum" var. "villosum" (N)
*"Ribes cynosbati" (N)
*"Ribes glandulosum" (N)
*"Ribes hirtellum" (N)
*"Ribes missouriense" (N)
*"Ribes nigrum" (I)
*"Ribes oxyacanthoides" ssp. "oxyacanthoides" (N)
*"Ribes rotundifolium" (N)
*"Ribes rubrum" (I)
*"Ribes triste" (N)
*"Ribes uva-crispa" var. "sativum" (I)
*"Ricinus communis" (I)
*"Robinia × ambigua" (N)
*"Robinia hispida" var. "fertilis" (N)
*"Robinia hispida" var. "hispida" (N)
*"Robinia pseudoacacia" (N)
*"Robinia viscosa" var. "viscosa" (N)
*"Rorippa palustris" ssp. "fernaldiana" (N)
*"Rorippa palustris" ssp. "hispida" (N)
*"Rorippa sessiliflora" (N)
*"Rorippa sylvestris" (I)
*"Rosa arkansana" var. "suffulta" (N)
*"Rosa blanda" var. "blanda" (N)
*"Rosa canina" (I)
*"Rosa carolina" var. "carolina" (N)
*"Rosa centifolia" (I)
*"Rosa cinnamomea" (I)
*"Rosa eglanteria" (I)
*"Rosa gallica" (I)
*"Rosa majalis" (I)
*"Rosa micrantha" (I)
*"Rosa multiflora" (I)
*"Rosa nitida" (N)
*"Rosa × palustriformis" (N)
*"Rosa palustris" (N)
*"Rosa pimpinellifolia" (I)
*"Rosa × rudiuscula" (N)
*"Rosa rugosa" (I)
*"Rosa setigera" var. "setigera" (N)
*"Rosa setigera" var. "tomentosa" (N)
*"Rosa wichuraiana" (I)
*"Rotala ramosior" (N)
*"Rubus aboriginum" (N)
*"Rubus allegheniensis" var. "allegheniensis" (N)
*"Rubus allegheniensis" var. "gravesii" (N)
*"Rubus alumnus" (N)
*"Rubus argutus" (N)
*"Rubus armeniacus" (I)
*"Rubus baileyanus" (N)
*"Rubus bellobatus" (N)
*"Rubus canadensis" (N)
*"Rubus deamii" (N)
*"Rubus depavitus" (N)
*"Rubus fecundus" (N)
*"Rubus flagellaris" (N)
*"Rubus frondosus" (N)
*"Rubus hispidus" (N)
*"Rubus idaeus" ssp. "strigosus" (N)
*"Rubus idaeus" ssp. "idaeus" (I)
*"Rubus invisus" (N)
*"Rubus laciniatus" (I)
*"Rubus laudatus" (N)
*"Rubus meracus" (N)
*"Rubus michiganensis" (N)
*"Rubus multifer" (N)
*"Rubus occidentalis" (N)
*"Rubus odoratus" var. "odoratus" (N)
*"Rubus pensilvanicus" (N)
*"Rubus pergratus" (N)
*"Rubus philadelphicus" (N)
*"Rubus phoenicolasius" (I)
*"Rubus plicatifolius" (N)
*"Rubus prestonensis" (N)
*"Rubus pubescens" var. "pubescens" (N)
*"Rubus recurvans" (N)
*"Rubus recurvicaulis" (N)
*"Rubus roribaccus" (N)
*"Rubus rosa" (N)
*"Rubus setosus" (N)
*"Rubus suus" (N)
*"Rubus trivialis" (N)
*"Rubus uvidus" (N)
*"Rubus vagus" (N)
*"Rudbeckia fulgida" var. "deamii" (N)
*"Rudbeckia fulgida" var. "fulgida" (N)
*"Rudbeckia fulgida" var. "speciosa" (N)
*"Rudbeckia fulgida" var. "umbrosa" (N)
*"Rudbeckia grandiflora" var. "grandiflora" (N)
*"Rudbeckia hirta" var. "hirta" (N)
*"Rudbeckia hirta" var. "pulcherrima" (N)
*"Rudbeckia laciniata" var. "laciniata" (N)
*"Rudbeckia triloba" var. "triloba" (N)
*"Ruellia caroliniensis" ssp. "caroliniensis" var. "caroliniensis" (N)
*"Ruellia caroliniensis" ssp. "caroliniensis" (N)
*"Ruellia humilis" (N)
*"Ruellia strepens" (N)
*"Rumex acetosa" (N)
*"Rumex acetosa" ssp. "acetosa" (I)
*"Rumex acetosella" (I)
*"Rumex × acutus" (I)
*"Rumex × acutus" (N)
*"Rumex altissimus" (N)
*"Rumex conglomeratus" (I)
*"Rumex crispus" ssp. "crispus" (I)
*"Rumex maritimus" (N)
*"Rumex obtusifolius" (I)
*"Rumex orbiculatus" var. "borealis" (N)
*"Rumex orbiculatus" var. "orbiculatus" (N)
*"Rumex patientia" (I)
*"Rumex salicifolius" var. "mexicanus" (N)
*"Rumex verticillatus" (N)
*"Ruppia cirrhosa" (N)

S

*"Sabatia angularis" (N)
*"Saccharum alopecuroides" (N)
*"Saccharum ravennae" (I)
*"Sagina decumbens" ssp. "decumbens" (N)
*"Sagina japonica" (I)
*"Sagina procumbens" (I)
*"Sagina procumbens" (N)
*"Sagittaria australis" (N)
*"Sagittaria brevirostra" (N)
*"Sagittaria calycina" var. "calycina" (N)
*"Sagittaria cuneata" (N)
*"Sagittaria graminea" var. "graminea" (N)
*"Sagittaria latifolia" (N)
*"Sagittaria platyphylla" (N)
*"Sagittaria rigida" (N)
*"Salicornia depressa" (N)
*"Salix alba" (I)
*"Salix amygdaloides" (N)
*"Salix bebbiana" (N)
*"Salix candida" (N)
*"Salix caprea" (I)
*"Salix caroliniana" (N)
*"Salix cinerea" (I)
*"Salix discolor" (N)
*"Salix × ehrhartiana" (I)
*"Salix × ehrhartiana" (N)
*"Salix eriocephala" (N)
*"Salix fragilis" (I)
*"Salix × glatfelteri" (N)
*"Salix humilis" var. "humilis" (N)
*"Salix humilis" var. "tristis" (N)
*"Salix interior" (N)
*"Salix lucida" ssp. "lucida" (N)
*"Salix matsudana" (I)
*"Salix myricoides" var. "albovestita" (N)
*"Salix myricoides" var. "myricoides" (N)
*"Salix nigra" (N)
*"Salix pedicellaris" (N)
*"Salix × pendulina" (I)
*"Salix pentandra" (I)
*"Salix petiolaris" (N)
*"Salix purpurea" (I)
*"Salix × rubens" (I)
*"Salix sericea" (N)
*"Salix serissima" (N)
*"Salix viminalis" (I)
*"Salsola collina" (I)
*"Salsola tragus" (I)
*"Salvia azurea" var. "grandiflora" (N)
*"Salvia coccinea" (N)
*"Salvia farinacea" (N)
*"Salvia lyrata" (N)
*"Salvia officinalis" (I)
*"Salvia pratensis" (I)
*"Salvia reflexa" (N)
*"Salvia splendens" (I)
*"Salvia × superba" (I)
*"Salvia × sylvestris" (I)
*"Sambucus nigra" (I)
*"Sambucus nigra" ssp. "canadensis" (N)
*"Sambucus racemosa" var. "racemosa" (N)
*"Samolus valerandi" (I)
*"Samolus valerandi" ssp. "parviflorus" (N)
*"Sanguinaria canadensis" (N)
*"Sanguisorba canadensis" (N)
*"Sanguisorba minor" ssp. "balearica" (I)
*"Sanicula canadensis" var. "canadensis" (N)
*"Sanicula canadensis" var. "grandis" (N)
*"Sanicula marilandica" (N)
*"Sanicula odorata" (N)
*"Sanicula smallii" (N)
*"Sanicula trifoliata" (N)
*"Saponaria officinalis" (I)
*"Sarracenia purpurea" ssp. "purpurea" (N)
*"Sassafras albidum" (N)
*"Satureja hortensis" (I)
*"Saururus cernuus" (N)
*"Saxifraga pensylvanica" (N)
*"Saxifraga virginiensis" var. "virginiensis" (N)
*"Scabiosa columbaria" (I)
*"Scandix pecten-veneris" (I)
*"Schedonorus phoenix" (I)
*"Schedonorus pratensis" (I)
*"Scheuchzeria palustris" ssp. "americana" (N)
*"Schizachne purpurascens" (N)
*"Schizachyrium littorale" (N)
*"Schizachyrium scoparium" var. "scoparium" (N)
*"Schoenoplectus acutus" var. "acutus" (N)
*"Schoenoplectus fluviatilis" (N)
*"Schoenoplectus pungens" var. "pungens" (N)
*"Schoenoplectus purshianus" (N)
*"Schoenoplectus saximontanus" (N)
*"Schoenoplectus smithii" (N)
*"Schoenoplectus subterminalis" (N)
*"Schoenoplectus tabernaemontani" (N)
*"Schoenoplectus torreyi" (N)
*"Scilla siberica" (I)
*"Scirpus atrovirens" (N)
*"Scirpus cyperinus" (N)
*"Scirpus expansus" (N)
*"Scirpus georgianus" (N)
*"Scirpus hattorianus" (N)
*"Scirpus pedicellatus" (N)
*"Scirpus pendulus" (N)
*"Scirpus polyphyllus" (N)
*"Scleranthus annuus" (I)
*"Scleria oligantha" (N)
*"Scleria pauciflora" var. "caroliniana" (N)
*"Scleria pauciflora" var. "pauciflora" (N)
*"Scleria triglomerata" (N)
*"Scleria verticillata" (N)
*"Sclerochloa dura" (I)
*"Sclerochloa dura" (N)
*"Scrophularia lanceolata" (N)
*"Scrophularia marilandica" (N)
*"Scutellaria elliptica" var. "elliptica" (N)
*"Scutellaria elliptica" var. "hirsuta" (N)
*"Scutellaria galericulata" (N)
*"Scutellaria incana" var. "incana" (N)
*"Scutellaria integrifolia" (N)
*"Scutellaria lateriflora" var. "lateriflora" (N)
*"Scutellaria nervosa" (N)
*"Scutellaria ovata" ssp. "ovata" (N)
*"Scutellaria parvula" var. "missouriensis" (N)
*"Scutellaria parvula" var. "parvula" (N)
*"Scutellaria saxatilis" (N)
*"Scutellaria serrata" (N)
*"Secale cereale" (I)
*"Securigera varia" (I)
*"Sedum acre" (I)
*"Sedum album" (I)
*"Sedum dendroideum" (I)
*"Sedum pulchellum" (N)
*"Sedum reflexum" (I)
*"Sedum sarmentosum" (I)
*"Sedum sexangulare" (I)
*"Sedum ternatum" (N)
*"Selaginella apoda" (N)
*"Selaginella eclipes" (N)
*"Selaginella rupestris" (N)
*"Senecio sylvaticus" (I)
*"Senecio vulgaris" (I)
*"Senna hebecarpa" (N)
*"Senna marilandica" (N)
*"Sericocarpus asteroides" (N)
*"Sericocarpus linifolius" (N)
*"Sesamum orientale" (I)
*"Setaria faberi" (I)
*"Setaria italica" (I)
*"Setaria parviflora" (N)
*"Setaria pumila" ssp. "pumila" (I)
*"Setaria verticillata" (I)
*"Setaria viridis" var. "viridis" (I)
*"Shepherdia canadensis" (N)
*"Sherardia arvensis" (I)
*"Sibara virginica" (N)
*"Sicyos angulatus" (N)
*"Sida hermaphrodita" (N)
*"Sida spinosa" (N)
*"Silene antirrhina" (N)
*"Silene armeria" (I)
*"Silene caroliniana" ssp. "pensylvanica" (N)
*"Silene caroliniana" ssp. "wherryi" (N)
*"Silene conica" (I)
*"Silene csereii" (I)
*"Silene dichotoma" (I)
*"Silene dioica" (I)
*"Silene latifolia" ssp. "alba" (I)
*"Silene nivea" (N)
*"Silene noctiflora" (I)
*"Silene nutans" (I)
*"Silene regia" (N)
*"Silene rotundifolia" (N)
*"Silene stellata" (N)
*"Silene virginica" var. "virginica" (N)
*"Silene vulgaris" (I)
*"Silphium laciniatum" var. "laciniatum" (N)
*"Silphium perfoliatum" var. "perfoliatum" (N)
*"Silphium terebinthinaceum" var. "luciae-brauniae" (N)
*"Silphium terebinthinaceum" var. "terebinthinaceum" (N)
*"Silphium trifoliatum" var. "latifolium" (N)
*"Silphium trifoliatum" var. "trifoliatum" (N)
*"Silybum marianum" (I)
*"Sinapis alba" (I)
*"Sinapis arvensis" ssp. "arvensis" (I)
*"Sisymbrium altissimum" (I)
*"Sisymbrium irio" (I)
*"Sisymbrium loeselii" (I)
*"Sisymbrium officinale" (I)
*"Sisyrinchium albidum" (N)
*"Sisyrinchium angustifolium" (N)
*"Sisyrinchium atlanticum" (N)
*"Sisyrinchium montanum" var. "crebrum" (N)
*"Sisyrinchium mucronatum" (N)
*"Sium suave" (N)
*"Smallanthus uvedalius" (N)
*"Smilax ecirrhata" (N)
*"Smilax glauca" (N)
*"Smilax herbacea" (N)
*"Smilax illinoensis" (N)
*"Smilax lasioneura" (N)
*"Smilax pulverulenta" (N)
*"Smilax rotundifolia" (N)
*"Smilax tamnoides" (N)
*"Solanum carolinense" var. "carolinense" (N)
*"Solanum dulcamara" var. "dulcamara" (I)
*"Solanum lycopersicum" var. "lycopersicum" (I)
*"Solanum physalifolium" (I)
*"Solanum ptycanthum" (N)
*"Solanum rostratum" (N)
*"Solanum triflorum" (N)
*"Solanum tuberosum" (I)
*"Solidago altissima" (N)
*"Solidago arguta" var. "arguta" (N)
*"Solidago bicolor" (N)
*"Solidago caesia" (N)
*"Solidago canadensis" var. "canadensis" (N)
*"Solidago canadensis" var. "gilvocanescens" (N)
*"Solidago canadensis" var. "hargeri" (N)
*"Solidago erecta" (N)
*"Solidago flexicaulis" (N)
*"Solidago gigantea" (N)
*"Solidago hispida" var. "hispida" (N)
*"Solidago juncea" (N)
*"Solidago nemoralis" var. "nemoralis" (N)
*"Solidago odora" var. "odora" (N)
*"Solidago patula" var. "patula" (N)
*"Solidago puberula" var. "puberula" (N)
*"Solidago rugosa" ssp. "aspera" (N)
*"Solidago rugosa" ssp. "rugosa" var. "rugosa" (N)
*"Solidago rugosa" ssp. "rugosa" var. "villosa" (N)
*"Solidago rugosa" ssp. "rugosa" (N)
*"Solidago rupestris" (N)
*"Solidago sempervirens" var. "sempervirens" (N)
*"Solidago speciosa" var. "rigidiuscula" (N)
*"Solidago speciosa" var. "speciosa" (N)
*"Solidago sphacelata" (N)
*"Solidago squarrosa" (N)
*"Solidago uliginosa" var. "linoides" (N)
*"Solidago uliginosa" var. "uliginosa" (N)
*"Solidago ulmifolia" var. "ulmifolia" (N)
*"Sonchus arvensis" ssp. "arvensis" (I)
*"Sonchus arvensis" ssp. "uliginosus" (I)
*"Sonchus asper" (I)
*"Sonchus oleraceus" (I)
*"Sorbaria sorbifolia" (I)
*"Sorbus aucuparia" (I)
*"Sorbus decora" (N)
*"Sorghastrum nutans" (N)
*"Sorghum bicolor" ssp. "bicolor" (I)
*"Sorghum halepense" (I)
*"Sparganium americanum" (N)
*"Sparganium androcladum" (N)
*"Sparganium emersum" (I)
*"Sparganium emersum" (N)
*"Sparganium eurycarpum" (N)
*"Spartina pectinata" (N)
*"Spergula arvensis" (I)
*"Spergularia maritima" (I)
*"Spergularia rubra" (I)
*"Spergularia salina" (N)
*"Spermacoce glabra" (N)
*"Sphenopholis intermedia" (N)
*"Sphenopholis nitida" (N)
*"Sphenopholis obtusata" (N)
*"Sphenopholis × pallens" (N)
*"Sphenopholis pensylvanica" (N)
*"Spinacia oleracea" (I)
*"Spiraea alba" var. "alba" (N)
*"Spiraea alba" var. "latifolia" (N)
*"Spiraea japonica" var. "fortunei" (I)
*"Spiraea prunifolia" (I)
*"Spiraea tomentosa" (N)
*"Spiraea × vanhouttei" (I)
*"Spiraea virginiana" (N)
*"Spiranthes cernua" (N)
*"Spiranthes lacera" var. "gracilis" (N)
*"Spiranthes lacera" var. "lacera" (N)
*"Spiranthes lucida" (N)
*"Spiranthes magnicamporum" (N)
*"Spiranthes ochroleuca" (N)
*"Spiranthes ovalis" var. "erostellata" (N)
*"Spiranthes romanzoffiana" (N)
*"Spiranthes tuberosa" (N)
*"Spiranthes vernalis" (N)
*"Spirodela polyrrhiza" (N)
*"Sporobolus compositus" var. "compositus" (N)
*"Sporobolus cryptandrus" (N)
*"Sporobolus heterolepis" (N)
*"Sporobolus neglectus" (N)
*"Sporobolus vaginiflorus" var. "ozarkanus" (N)
*"Sporobolus vaginiflorus" var. "vaginiflorus" (N)
*"Stachys aspera" (N)
*"Stachys cordata" (N)
*"Stachys germanica" (I)
*"Stachys palustris" (N)
*"Stachys pilosa" var. "arenicola" (N)
*"Stachys sylvatica" (I)
*"Stachys tenuifolia" (N)
*"Staphylea trifolia" (N)
*"Stellaria alsine" (N)
*"Stellaria corei" (N)
*"Stellaria graminea" (I)
*"Stellaria holostea" (I)
*"Stellaria longifolia" var. "longifolia" (N)
*"Stellaria media" ssp. "media" (I)
*"Stellaria media" ssp. "pallida" (I)
*"Stellaria pubera" (N)
*"Stenanthium gramineum" var. "gramineum" (N)
*"Stenanthium gramineum" var. "robustum" (N)
*"Stenaria nigricans" var. "nigricans" (N)
*"Stenosiphon linifolius" (N)
*"Streptopus lanceolatus" var. "lanceolatus" (N)
*"Streptopus lanceolatus" var. "roseus" (N)
*"Strophostyles helvola" (N)
*"Strophostyles leiosperma" (N)
*"Strophostyles umbellata" (N)
*"Stuckenia filiformis" ssp. "alpina" (N)
*"Stuckenia pectinata" (N)
*"Stuckenia vaginata" (N)
*"Stylophorum diphyllum" (N)
*"Stylosanthes biflora" (N)
*"Styphnolobium japonicum" (I)
*"Styrax americanus" (N)
*"Styrax grandifolius" (N)
*"Suaeda calceoliformis" (N)
*"Sullivantia sullivantii" (N)
*"Symphoricarpos albus" var. "albus" (N)
*"Symphoricarpos albus" var. "laevigatus" (N)
*"Symphoricarpos occidentalis" (N)
*"Symphoricarpos orbiculatus" (N)
*"Symphyotrichum boreale" (N)
*"Symphyotrichum ciliatum" (N)
*"Symphyotrichum cordifolium" (N)
*"Symphyotrichum drummondii" var. "drummondii" (N)
*"Symphyotrichum dumosum" var. "strictior" (N)
*"Symphyotrichum ericoides" var. "ericoides" (N)
*"Symphyotrichum laeve" var. "laeve" (N)
*"Symphyotrichum lanceolatum" ssp. "lanceolatum" var. "hirsuticaule" (N)
*"Symphyotrichum lanceolatum" ssp. "lanceolatum" var. "interior" (N)
*"Symphyotrichum lanceolatum" ssp. "lanceolatum" var. "lanceolatum" (N)
*"Symphyotrichum lanceolatum" ssp. "lanceolatum" var. "latifolium" (N)
*"Symphyotrichum lanceolatum" ssp. "lanceolatum" (N)
*"Symphyotrichum lateriflorum" var. "lateriflorum" (N)
*"Symphyotrichum lowrieanum" (N)
*"Symphyotrichum novae-angliae" (N)
*"Symphyotrichum oblongifolium" (N)
*"Symphyotrichum ontarionis" (N)
*"Symphyotrichum oolentangiense" var. "oolentangiense" (N)
*"Symphyotrichum patens" var. "patens" (N)
*"Symphyotrichum phlogifolium" (N)
*"Symphyotrichum pilosum" var. "pilosum" (N)
*"Symphyotrichum pilosum" var. "pringlei" (N)
*"Symphyotrichum praealtum" var. "praealtum" (N)
*"Symphyotrichum prenanthoides" (N)
*"Symphyotrichum puniceum" var. "puniceum" (N)
*"Symphyotrichum racemosum" (N)
*"Symphyotrichum sericeum" (N)
*"Symphyotrichum shortii" (N)
*"Symphyotrichum subulatum" (N)
*"Symphyotrichum undulatum" (N)
*"Symphyotrichum urophyllum" (N)
*"Symphytum asperum" (I)
*"Symphytum officinale" (I)
*"Symplocarpus foetidus" (N)
*"Synandra hispidula" (N)
*"Syringa vulgaris" (I)

T

*"Taenidia integerrima" (N)
*"Tagetes erecta" (I)
*"Tagetes patula" (I)
*"Tamarix chinensis" (I)
*"Tanacetum balsamita" (I)
*"Tanacetum coccineum" (I)
*"Tanacetum parthenium" (I)
*"Tanacetum vulgare" (I)
*"Taraxacum laevigatum" (I)
*"Taraxacum officinale" (N)
*"Taraxacum officinale" ssp. "officinale" (I)
*"Taxodium distichum" (N)
*"Taxus canadensis" (N)
*"Taxus cuspidata" (I)
*"Tephrosia virginiana" (N)
*"Tetradium daniellii" (I)
*"Tetragonia tetragonioides" (I)
*"Tetraneuris herbacea" (N)
*"Teucrium canadense" var. "canadense" (N)
*"Teucrium canadense" var. "occidentale" (N)
*"Thalictrum dasycarpum" (N)
*"Thalictrum dioicum" (N)
*"Thalictrum pubescens" (N)
*"Thalictrum revolutum" (N)
*"Thalictrum thalictroides" (N)
*"Thaspium barbinode" (N)
*"Thaspium trifoliatum" var. "aureum" (N)
*"Thaspium trifoliatum" var. "trifoliatum" (N)
*"Thelypteris noveboracensis" (N)
*"Thelypteris palustris" var. "pubescens" (N)
*"Thlaspi alliaceum" (I)
*"Thlaspi arvense" (I)
*"Thuja occidentalis" (N)
*"Thymelaea passerina" (I)
*"Thymelaea passerina" (N)
*"Thymus praecox" ssp. "arcticus" (I)
*"Tiarella cordifolia" var. "cordifolia" (N)
*"Tilia americana" var. "americana" (N)
*"Tilia americana" var. "heterophylla" (N)
*"Tilia × europaea" (I)
*"Tipularia discolor" (N)
*"Torilis arvensis" ssp. "arvensis" (N)
*"Torilis arvensis" ssp. "arvensis" (I)
*"Torilis japonica" (I)
*"Torreyochloa pallida" var. "pallida" (N)
*"Toxicodendron radicans" ssp. "negundo" (N)
*"Toxicodendron rydbergii" (N)
*"Toxicodendron vernix" (N)
*"Tradescantia ohiensis" (N)
*"Tradescantia subaspera" var. "subaspera" (N)
*"Tradescantia virginiana" (N)
*"Tragopogon dubius" (I)
*"Tragopogon lamottei" (I)
*"Tragopogon porrifolius" (I)
*"Triadenum fraseri" (N)
*"Triadenum tubulosum" (N)
*"Triadenum virginicum" (N)
*"Triadenum walteri" (N)
*"Triantha glutinosa" (N)
*"Tribulus terrestris" (I)
*"Trichomanes boschianum" (N)
*"Trichomanes intricatum" (N)
*"Trichophorum planifolium" (N)
*"Trichostema brachiatum" (N)
*"Trichostema dichotomum" (N)
*"Trichostema setaceum" (N)
*"Tridens flavus" var. "flavus" (N)
*"Trientalis borealis" ssp. "borealis" (N)
*"Trifolium ambiguum" (I)
*"Trifolium arvense" (I)
*"Trifolium aureum" (I)
*"Trifolium campestre" (I)
*"Trifolium dubium" (I)
*"Trifolium hybridum" (I)
*"Trifolium incarnatum" (I)
*"Trifolium pratense" (I)
*"Trifolium reflexum" (N)
*"Trifolium repens" (I)
*"Trifolium resupinatum" (I)
*"Trifolium stoloniferum" (N)
*"Triglochin maritima" (N)
*"Triglochin palustris" (N)
*"Trillium cernuum" (N)
*"Trillium erectum" (N)
*"Trillium flexipes" (N)
*"Trillium grandiflorum" (N)
*"Trillium nivale" (N)
*"Trillium recurvatum" (N)
*"Trillium sessile" (N)
*"Trillium undulatum" (N)
*"Triodanis perfoliata" (N)
*"Triosteum angustifolium" (N)
*"Triosteum aurantiacum" var. "aurantiacum" (N)
*"Triosteum aurantiacum" var. "glaucescens" (N)
*"Triosteum aurantiacum" var. "illinoense" (N)
*"Triosteum perfoliatum" (N)
*"Triphora trianthophora" (N)
*"Triplasis purpurea" (N)
*"Tripleurospermum maritimum" (N)
*"Tripleurospermum maritimum" ssp. "maritimum" (I)
*"Tripsacum dactyloides" (N)
*"Triticum aestivum" (I)
*"Trollius laxus" ssp. "laxus" (N)
*"Tsuga canadensis" (N)
*"Tulipa gesneriana" (I)
*"Tussilago farfara" (I)
*"Typha angustifolia" (I)
*"Typha angustifolia" (N)
*"Typha × glauca" (N)
*"Typha latifolia" (N)

U

*"Ulmus americana" (N)
*"Ulmus procera" (I)
*"Ulmus pumila" (I)
*"Ulmus rubra" (N)
*"Ulmus thomasii" (N)
*"Urtica chamaedryoides" (N)
*"Urtica dioica" ssp. "gracilis" (N)
*"Urtica dioica" ssp. "dioica" (I)
*"Utricularia cornuta" (N)
*"Utricularia geminiscapa" (N)
*"Utricularia gibba" (N)
*"Utricularia intermedia" (N)
*"Utricularia macrorhiza" (N)
*"Utricularia minor" (N)
*"Uvularia grandiflora" (N)
*"Uvularia perfoliata" (N)
*"Uvularia sessilifolia" (N)

V

*"Vaccaria hispanica" (I)
*"Vaccinium angustifolium" (N)
*"Vaccinium corymbosum" (N)
*"Vaccinium fuscatum" (N)
*"Vaccinium macrocarpon" (N)
*"Vaccinium myrtilloides" (N)
*"Vaccinium oxycoccos" (N)
*"Vaccinium pallidum" (N)
*"Vaccinium simulatum" (N)
*"Vaccinium stamineum" (N)
*"Valeriana edulis" var. "ciliata" (N)
*"Valeriana officinalis" (I)
*"Valeriana pauciflora" (N)
*"Valeriana uliginosa" (N)
*"Valerianella chenopodiifolia" (N)
*"Valerianella locusta" (I)
*"Valerianella radiata" (N)
*"Valerianella umbilicata" (N)
*"Vallisneria americana" (N)
*"Veratrum virginicum" (N)
*"Veratrum viride" (N)
*"Veratrum woodii" (N)
*"Verbascum blattaria" (I)
*"Verbascum phlomoides" (I)
*"Verbascum phoeniceum" (I)
*"Verbascum thapsus" (I)
*"Verbascum virgatum" (I)
*"Verbena bracteata" (N)
*"Verbena × engelmannii" (N)
*"Verbena hastata" var. "hastata" (N)
*"Verbena × moechina" (N)
*"Verbena simplex" (N)
*"Verbena stricta" (N)
*"Verbena urticifolia" var. "leiocarpa" (N)
*"Verbena urticifolia" var. "urticifolia" (N)
*"Verbesina alternifolia" (N)
*"Verbesina helianthoides" (N)
*"Verbesina occidentalis" (N)
*"Verbesina virginica" var. "virginica" (N)
*"Vernonia arkansana" (N)
*"Vernonia fasciculata" ssp. "fasciculata" (N)
*"Vernonia gigantea" ssp. "gigantea" (N)
*"Vernonia × illinoensis" (N)
*"Vernonia missurica" (N)
*"Vernonia noveboracensis" (N)
*"Veronica agrestis" (I)
*"Veronica americana" (N)
*"Veronica anagallis-aquatica" (N)
*"Veronica arvensis" (I)
*"Veronica austriaca" ssp. "teucrium" (I)
*"Veronica beccabunga" (I)
*"Veronica chamaedrys" (I)
*"Veronica filiformis" (I)
*"Veronica hederifolia" (I)
*"Veronica officinalis" var. "officinalis" (I)
*"Veronica peregrina" ssp. "peregrina" (N)
*"Veronica peregrina" ssp. "xalapensis" (N)
*"Veronica persica" (I)
*"Veronica polita" (I)
*"Veronica scutellata" (N)
*"Veronica serpyllifolia" (N)
*"Veronica serpyllifolia" ssp. "serpyllifolia" (I)
*"Veronica verna" (I)
*"Veronicastrum virginicum" (N)
*"Viburnum acerifolium" (N)
*"Viburnum buddleifolium" (I)
*"Viburnum dentatum" var. "dentatum" (N)
*"Viburnum dentatum" var. "venosum" (N)
*"Viburnum lantana" (I)
*"Viburnum lantanoides" (N)
*"Viburnum lentago" (N)
*"Viburnum molle" (N)
*"Viburnum nudum" var. "cassinoides" (N)
*"Viburnum opulus" var. "americanum" (N)
*"Viburnum opulus" var. "opulus" (I)
*"Viburnum plicatum" (I)
*"Viburnum prunifolium" (N)
*"Viburnum rafinesqueanum" (N)
*"Viburnum recognitum" (N)
*"Viburnum × rhytidophylloides" (I)
*"Viburnum rufidulum" (N)
*"Vicia americana" ssp. "americana" (N)
*"Vicia caroliniana" (N)
*"Vicia cracca" ssp. "cracca" (I)
*"Vicia hirsuta" (I)
*"Vicia sativa" ssp. "nigra" (I)
*"Vicia sativa" ssp. "sativa" (I)
*"Vicia tetrasperma" (I)
*"Vicia villosa" ssp. "varia" (I)
*"Vicia villosa" ssp. "villosa" (I)
*"Vigna unguiculata" (I)
*"Vinca major" (I)
*"Vinca minor" (I)
*"Viola affinis" (N)
*"Viola arvensis" (I)
*"Viola × bernardii" (N)
*"Viola bicolor" (N)
*"Viola × bissellii" (N)
*"Viola blanda" var. "blanda" (N)
*"Viola blanda" var. "palustriformis" (N)
*"Viola × brauniae" (N)
*"Viola canadensis" var. "canadensis" (N)
*"Viola × conjugens" (N)
*"Viola × consobrina" (N)
*"Viola × cooperrideri" (N)
*"Viola × cordifolia" (N)
*"Viola cucullata" (N)
*"Viola × eclipes" (N)
*"Viola × filicetorum" (N)
*"Viola hastata" (N)
*"Viola hirsutula" (N)
*"Viola labradorica" (N)
*"Viola lanceolata" ssp. "lanceolata" (N)
*"Viola macloskeyi" ssp. "pallens" (N)
*"Viola × malteana" (N)
*"Viola missouriensis" (N)
*"Viola nephrophylla" (N)
*"Viola odorata" (I)
*"Viola × palmata" (N)
*"Viola pedata" (N)
*"Viola pedatifida" (N)
*"Viola × populifolia" (N)
*"Viola × primulifolia" (N)
*"Viola pubescens" var. "pubescens" (N)
*"Viola pubescens" var. "scabriuscula" (N)
*"Viola × ravida" (N)
*"Viola rostrata" (N)
*"Viola rotundifolia" (N)
*"Viola sagittata" var. "ovata" (N)
*"Viola sagittata" var. "sagittata" (N)
*"Viola selkirkii" (N)
*"Viola × slavinii" (N)
*"Viola sororia" (N)
*"Viola striata" (N)
*"Viola tricolor" (I)
*"Viola triloba" var. "dilatata" (N)
*"Viola triloba" var. "triloba" (N)
*"Viola tripartita" (N)
*"Viola walteri" (N)
*"Viola × wittrockiana" (I)
*"Vitex negundo" var. "heterophylla" (I)
*"Vitis aestivalis" var. "aestivalis" (N)
*"Vitis aestivalis" var. "bicolor" (N)
*"Vitis cinerea" var. "baileyana" (N)
*"Vitis labrusca" (N)
*"Vitis riparia" (N)
*"Vitis vulpina" (N)
*"Vittaria appalachiana" (N)
*"Vulpia bromoides" (I)
*"Vulpia myuros" (I)
*"Vulpia octoflora" var. "glauca" (N)

W

*"Waldsteinia fragarioides" ssp. "fragarioides" (N)
*"Wisteria floribunda" (I)
*"Wisteria frutescens" (N)
*"Wolffia borealis" (N)
*"Wolffia brasiliensis" (N)
*"Wolffia columbiana" (N)
*"Wolffiella gladiata" (N)
*"Woodsia ilvensis" (N)
*"Woodsia obtusa" ssp. "obtusa" (N)
*"Woodwardia areolata" (N)
*"Woodwardia virginica" (N)

X

*"Xanthium spinosum" (I)
*"Xanthium strumarium" var. "canadense" (N)
*"Xanthium strumarium" var. "glabratum" (N)
*"Xanthorhiza simplicissima" (N)
*"Xyris difformis" var. "difformis" (N)
*"Xyris torta" (N)

Y

*"Yucca filamentosa" (N)

Z

*"Zannichellia palustris" (N)
*"Zanthoxylum americanum" (N)
*"Zea mays" ssp. "mays" (I)
*"Zelkova serrata" (I)
*"Zigadenus elegans" ssp. "glaucus" (N)
*"Zizania aquatica" var. "aquatica" (N)
*"Zizania palustris" var. "interior" (N)
*"Zizia aptera" (N)
*"Zizia aurea" (N)

See also

* Flora
* Flora of the United States

References

[http://plants.usda.gov/ USDA PLANTS Database]

External links

* [http://www.dnr.state.oh.us/tabid/2007/default.aspx Ohio's top ten invasive plants]
* [http://ohiodnr.com/tabid/2018/Default.aspx Rare Native Ohio Plants 2006-2007]
* [http://www.hcs.ohio-state.edu/hcs/webgarden/WGN/native.html Bibliography - Ohio State University Extension]
* [http://www.efloras.org/flora_page.aspx?flora_id=1 "Flora of North America"] United States topic
title = Flora of the United States by political division
prefix = Flora of


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Outline of Ohio — …   Wikipedia

  • Ohio River — Valley redirects here. For the American wine region that spans the valley, see Ohio River Valley AVA. Coordinates: 36°59′12″N 89°07′50″W / 36.98667°N 89.13056°W …   Wikipedia

  • Ohio River Valley AVA — (wine region) Type American Viticultural Area Year established 1983, amended in 1987[1] Country USA …   Wikipedia

  • Ohio — This article is about the U.S. state of Ohio. For other uses, see Ohio (disambiguation). State of Ohio …   Wikipedia

  • Flora Le Breton — (born 1898) was an English silent film actress from Croyden, Surrey, England. She was blond with dark blue eyes. In her own country she was called the English Mary Pickford. HeritageHer ancestry was English, French, Scottish, and Irish. Her… …   Wikipedia

  • Flora Call Disney — Infobox Person name = Flora Call Disney image size = caption = birth date = birth date|1868|4|22|mf=y birth place = death date = death date and age|1938|11|26|1868|4|22|mf=y death place = occupation = Housewife spouse = Elias Disney parents =… …   Wikipedia

  • Ohio (Fluss) — Vorlage:Infobox Fluss/DGWK fehltVorlage:Infobox Fluss/KARTE fehlt Ohio River (Oyo) Der Fluss an der Grenze von Indiana und Illinois …   Deutsch Wikipedia

  • Environment of Hawaii — Hawi wind farm near Hāwī, Hawai i. The wind farm has 16 Vestas V47 660 kW wind turbines for a total nameplate capacity of 10.56 MW The majority of environmental concerns affecting Hawaii today are related to pressures from increasing human… …   Wikipedia

  • Bellefontaine, Ohio — Infobox Settlement official name = Bellefontaine, Ohio settlement type = City nickname = The Peak of Ohio motto = imagesize = image caption = image mapsize = 250px map caption = Location of Bellefontaine, Ohio mapsize1 = map caption1 =… …   Wikipedia

  • National Register of Historic Places listings at colleges and universities in the United States — This list is incomplete; you can help by expanding it. This is an incomplete list of historic properties and districts at United States colleges and universities that are listed on the National Register of Historic Places (NRHP). This includes… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”