Taxon  Report   4250 
Horkelia sericata  S. Watson
Howell's horkelia,  Silky horkelia
Horkelia sericata
© 2015 John Doyen
CalPhotos: click on a
photo to see it bigger
Horkelia sericata
© 2008 Keir Morse
Horkelia sericata
© 2010 Vernon Smith
Horkelia sericata, a dicot, is a perennial herb that is native to California and Oregon.
It is included in the CNPS Inventory of Rare and Endangered Plants on list 4.3 (limited distribution).   7th Edition  /  8th Edition

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Horkelia sericata
© 2008 Keir Morse
Family: ROSACEAE  
Genus: Horkelia
Chaparral, Yellow Pine Forest
AFFINITY to serpentine soil:   5.6 (strict endemic)   [Safford et al 2005]
Name Status:
Accepted by TJM2 + CNPS + PLANTS + JM93
Alternate Names:
(according to)

ICPN: Potentilla laxiflora
More information about  Horkelia sericata
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: May 29, 2016).

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