Encelia resinifera


Encelia resinifera

Taxobox
name = "Encelia resinifera"



image_width = 240px
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Asterales
familia = Asteraceae
genus = "Encelia"
species = "E. resinifera"
binomial = "Encelia resinifera"
binomial_authority = C.Clark
synonyms="Encelia frutescens" var. "resinosa" M.E.Jones ex S.F.Blake
"Encelia resinifera" (sticky brittlebush) is a species of flowering plant in the family Asteraceae, native to the United States.

Description

This species is a shrub ranging in height from 40 to 150 cm. The trunk, which becomes fissured with age, supports slender stems. The leaves, which range between 10 and 25 mm in length, are ovate or lanceolate and are usually pointed at the tips. The yellow flowerheads are borne singly, appearing between May and July (late fall to mid-summer) in their native range. These have 8-13 ray florets.cite web|url=http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066500|title="Encelia resinifera" C. Clark|work=Flora of North America database|publisher=efloras.org |accessdate=2008-01-18]

Taxonomy

"E. resinifera" was originally described as a variety of "E. frutescens" ("E. frutescens" var. "resinosa") by M.E.Jones in 1913. In 1998 it was reclassified as a species in its own right by Curtis Clark.

Two subspecies have been identified, as follows:
*"E. resinifera" subsp. "resinifera" - button brittlebushcite web|url=http://plants.usda.gov/java/profile?symbol=ENRE|title="Encelia resinifera" C. Clark|work=PLANTS database|publisher=United States Department of Agriculture|accessdate=2008-01-18]
*"E. resinifera" subsp. "tenuifolia" C.Clark, which is found in the Grand Canyon area. This subspecies has both leaves and ray laminae with a length that is more than three times their width.

Distribution

The species is found at elevations between 1100 and 1700 metres in the states of Arizona and Utah in soils derived from sandstone.

References


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Look at other dictionaries:

  • Encelia resinifera — ID 30268 Symbol Key ENRE Common Name sticky brittlebush Family Asteraceae Category Dicot Division Magnoliophyta US Nativity Native to U.S. US/NA Plant Yes State Distribution AZ, UT Growth Habit Shrub, Subshrub Dura …   USDA Plant Characteristics

  • Encelia resinifera ssp. resinifera — ID 30269 Symbol Key ENRER Common Name button brittlebush Family Asteraceae Category Dicot Division Magnoliophyta US Nativity Native to U.S. US/NA Plant Yes State Distribution AZ, UT Growth Habit Shrub, Subshrub Dur …   USDA Plant Characteristics

  • Encelia resinifera ssp. tenuifolia — ID 30271 Symbol Key ENRET Common Name N/A Family Asteraceae Category Dicot Division Magnoliophyta US Nativity Native to U.S. US/NA Plant Yes State Distribution AZ Growth Habit Shrub, Subshrub Durat …   USDA Plant Characteristics

  • Encelia resinifera C. Clark ssp. resinifera — Symbol ENRER Common Name button brittlebush Botanical Family Asteraceae …   Scientific plant list

  • Encelia resinifera C. Clark — Symbol ENRE Common Name sticky brittlebush Botanical Family Asteraceae …   Scientific plant list

  • Encelia resinifera C. Clark ssp. tenuifolia C. Clark — Symbol ENRET Botanical Family Asteraceae …   Scientific plant list

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  • Encelia — Taxobox name = Encelia image width = 250px image caption = Encelia farinosa regnum = Plantae divisio = Magnoliophyta classis = Magnoliopsida ordo = Asterales familia = Asteraceae tribus = Heliantheae genus = Encelia genus authority = Adans.… …   Wikipedia

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