Taxon  Report   4250    
Horkelia sericata  S. Watson
Howell's horkelia,  Silky horkelia
Horkelia sericata
© 2010 Sean B. Smith
Photos from
CalPhotos / Calflora
Horkelia sericata
© 1995 Saint Mary's College of California
Horkelia sericata, a dicot, is a perennial herb that is native to California, Oregon.
California Rare Plant Rank: 4.3 (limited distribution).   8th Edition

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Horkelia sericata
© 1995 Saint Mary's College of California
Family: ROSACEAE  
Genus: Horkelia
Communities: Chaparral, Yellow Pine Forest

Serpentine affinity: 5.6; (strict endemic)

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
ICPN: Potentilla laxiflora
More information about  Horkelia sericata
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 22, 2019).