Taxon  Report   4190    
Hieracium horridum  Fr.
Prickly hawkweed,  Shaggy hawkweed
Hieracium horridum
© 2005 Steve Matson
Photos from
CalPhotos / Calflora
Hieracium horridum
© 2001 Jeff Abbas
Hieracium horridum
© 2003 Dianne Fristrom
Hieracium horridum, a dicot, is a perennial herb that is native to California, is also found outside of California, but is confined to western North America.

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Hieracium horridum
© 2010 Keir Morse
Genus: Hieracium
Communities: Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Subalpine Forest
Name Status:
Accepted by JEF + PLANTS

More information about  Hieracium horridum
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 21, 2019).