Taxon  Report   86    
Achyronychia cooperi  Torr. & A. Gray
Frost mat,  Onyxflower
Achyronychia cooperi
© 2003 James M. Andre
Photos from
CalPhotos / Calflora
Achyronychia cooperi
© 2010 Steve Matson
Achyronychia cooperi
© 2014 John Doyen
Achyronychia cooperi, a dicot, is an annual 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
Achyronychia cooperi
© 2009 Keir Morse
Communities: Creosote Bush Scrub
Name Status:
Accepted by JEF + PLANTS

More information about  Achyronychia cooperi
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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Dec 10, 2018).

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