Calycadenia truncata ssp. microcephala Calflora

Taxon Report

Calycadenia truncata DC. ssp. microcephala H. M. Hall ex D. D. Keck

(not an active name)

Oregon western rosinweed

Calycadenia truncata ssp. microcephala is an annual herb that is native to California, and also found elsewhere in western North America.

also called Calycadenia micrantha


	Plant Range Observation Search ~91 records in California Plant Characteristics

Bloom Period

Photos on Calflora


Parent:	Calycadenia truncata
Genus:	Calycadenia
Family:	Asteraceae
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Ultramafic affinity: 2.1 - weak indicator

Communities: Yellow Pine Forest, Foothill Woodland, Chaparral

Name Status:
Accepted by PLANTS

Alternate Names:


JEF	Calycadenia micrantha

Information about Calycadenia truncata ssp. microcephala from other sources


Nursery availability from CNPLX Commercial availability unknown. USDA PLANTS Profile (CATRM) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	International Plants Names Index Search efloras.org (Flora of North America) Landscape information from Calscape BONAP Distribution Map Consortium of California Herbaria 2 Search the Native American Ethnobotany Database	Add an Observation Location Suitability Planting Guide Distribution by County
photos / record / common / links

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 05/12/2025).