Calflora
Taxon  Report   1328    
Calycadenia truncata  DC.
Rosin weed
Calycadenia truncata
© 2011 Vernon Smith
Photos from
CalPhotos / Calflora
Calycadenia truncata
© 2011 Aaron Arthur
Calycadenia truncata
© 2013 John Doyen
Calycadenia truncata, 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 + photos)



point, line, or polygon

Plant Characteristics
and Associations



Bloom Period
Calycadenia truncata
© 2005 Steve Tyron
Communities: Foothill Woodland, Chaparral, Yellow Pine Forest

Serpentine affinity: 2.1; (weak indicator)

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
ICPN: Calycadenia truncata ssp. scabrella
ICPN: Calycadenia truncata ssp. truncata
More information about  Calycadenia truncata
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (CATR3)

Search the International Plants Names Index

Search efloras.org (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: http://www.calflora.org/   (Accessed: Oct 22, 2018).

The information on this page comes from diverse sources. None of the links are sponsored.