Taxon  Report   86 
Achyronychia cooperi  Torrey & A. Gray
Frost mat,  Onyxflower
Achyronychia cooperi
© 2009 Keir Morse
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Achyronychia cooperi
© 2010 Steve Matson
Achyronychia cooperi
© 2014 John Doyen
Achyronychia cooperi, a dicot, is an annual herb that is native to California and is also found outside of California, but is confined to western North America.

Interactive Distribution Map

Observation Hotline
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Plant Characteristics
and Associations

Bloom Period
Achyronychia cooperi
© 2003 James M. Andre
Creosote Bush Scrub
Distribution by County 

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Name Status:
Accepted by TJM2 + PLANTS + JM93
More information about  Achyronychia cooperi
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: Oct 26, 2016).

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