Roldana

Taxobox


image_width = 260px
image_caption = "Roldana" trichomes on phyllaries
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
subclassis = Asteridae
unranked_ordo = Euasterids II
ordo = Asterales
familia = Asteraceae
subfamilia = Asteroideae
tribus = Senecioneae
genus = "Roldana"
genus_authority = La Llave ex Lex.
type_species = "Roldana lobata"
subdivision_ranks = Species
subdivision =See text
synonyms ="Pericalia" Cass.
"Senecio" L.
Sources: ING,cite web
url = http://botany.si.edu/ing/INGsearch.cfm?searchword=Roldana
title = "Roldana"
accessdate = 2008-05-21
date = 2006-02-20
format = HTML
work = Index Nominum Genericorum
publisher = International Association for Plant Taxonomy] GRINcite web
url = http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?16329
title = Genus: "Roldana" La Llave
accessdate = 2008-05-23
author = Germplasm Resources Information Network (GRIN)
authorlink = Germplasm Resources Information Network
date = 2005-10-26
format = HTML
work = Taxonomy for Plants
publisher = USDA, ARS, National Genetic Resources Program, National Germplasm Resources Laboratory, Beltsville, Maryland ]

"Roldana" also known as groundsel is a genus of large herbs or subshrubs from the tribe Senecioneae and the family Asteraceae. Most if not all of its members used to be "Senecio". There are approximately 50 species which are native to Southwest United States, Mexico and Central America and naturalized elsewhere.cite journal
last =Funston
first =A. Michele
title = 230. Roldana La Llave
journal =Flora of North America
volume =20
pages = Page 542,620
accessdate = 2008-05-23 ] cite web
url = http://www.anbg.gov.au/abrs/abif/flora/stddisplay.xsql?pnid=5973
title = "ROLDANA"
accessdate = 2008-05-23
format = HTML
work = Flora of Australia Online ]

elected species

*"Roldana hartwegii" (Benth.) H. Rob. & Brettel -- Hartweg's groundsel:*"Senecio hartwegii" Benth.
*"Roldana petasitis" (Sims) H. Rob. & Brettell -- velvet groundsel:*"Senecio petasitis" (Sims) DC.Source: NRCScite web
url = http://plants.usda.gov/java/profile?symbol=ROLDA
title = PLANTS Profile, "Roldana"
accessdate = 2008-05-23
author = Natural Resources Conservation Service (NRCS)
authorlink = Natural Resources Conservation Service
format = HTML
work = The PLANTS Database
publisher = United States Department of Agriculture ]

References

External links