Taxon  Report   1325    
Calycadenia oppositifolia  (Greene) Greene
Butte county calycadenia
Calycadenia oppositifolia
© 1995 Arthur H. Bazell, M.D.
Photos from
CalPhotos / Calflora
Calycadenia oppositifolia
© 2006 George W. Hartwell
Calycadenia oppositifolia
© 2009 George W. Hartwell
Calycadenia oppositifolia, a dicot, is an annual herb that is native to California, is endemic (limited) to California.
California Rare Plant Rank: 4.2 (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
Calycadenia oppositifolia
© 1995 Arthur H. Bazell, M.D.
Genus: Calycadenia
Communities: Chaparral, Valley Grassland, Foothill Woodland

Serpentine affinity: 2.6; (strong indicator)

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
PLANTS: Hemizonia oppositifolia
More information about  Calycadenia oppositifolia
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 24, 2019).