Calflora
Taxon  Report   5999    
Osmadenia tenella  Nutt.
False rosinweed,  Osmadenia
Osmadenia tenella
© 2015 Richard Spellenberg
Photos from
CalPhotos / Calflora
Osmadenia tenella
© 2015 Richard Spellenberg
Osmadenia tenella
© 1999 Wayne D. Johnson
Osmadenia tenella, 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
Osmadenia tenella
© 2018 Diane Etchison
Family: ASTERACEAE  
Genus: Osmadenia
Communities: Coastal Prairie, Southern Oak Woodland
Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Hemizonia tenella
ICPN + PLANTS: Calycadenia tenella
More information about  Osmadenia tenella
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 (OSTE)

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: https://www.calflora.org/   (Accessed: Nov 19, 2018).

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