Hieracium horridum

Hieracium horridum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Hieracium
Species:
H. horridum
Binomial name
Hieracium horridum
Fr.[1]
Synonyms[1]
  • Hieracium breweri A.Gray
  • Pilosella horrida (Fr.) F.W.Schultz & Sch.Bip.

Hieracium horridum,[1] known as the prickly hawkweed[2] or shaggy hawkweed, is a species of plant in the family Asteraceae. It gets its name from the long, dense, shaggy white to brown hairs (trichomes) which cover all of the plant parts[3] of this plant species.[4] The species is native to Oregon, California, and Nevada in the western United States.[5][6]

  1. ^ a b c Cite error: The named reference POWO_218454-1 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference NRCS was invoked but never defined (see the help page).
  3. ^ Niehaus, Theodore F. (1976). "Pacific States Wildflowers". Peterson Field Guide. The Peterson Field Guide Series. Illustrations by Charles L. Ripper. New York: Houghton Mifflin Company. p. 220. ISBN 0-395-91095-1.
  4. ^ "Hieracium horridum". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 2007-12-26.
  5. ^ Calflora taxon report, University of California, Hieracium horridum Fries Shaggy Hawkweed, prickly hawkweed
  6. ^ Biota of North America Program 2014 county distribution map