Taxon  Report   1805    
Ceanothus masonii  McMinn
Bolinas ceanothus,  Mason's ceanothus
Ceanothus masonii
© 2015 Linda Vassallo
Photos from
CalPhotos / Calflora
Ceanothus masonii
© 2010 Neal Kramer
Ceanothus masonii
© 2012 Vernon Smith
Ceanothus masonii, a dicot, is a shrub that is native to California, is endemic (limited) to California.
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

It is listed by the State of California as Rare .

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
Ceanothus masonii
© 1995 Doreen L. Smith
Genus: Ceanothus
Communities: Chaparral

Serpentine affinity: 3.3; (strong indicator)

Name Status:
Accepted by JEF + CNPS + PLANTS

More information about  Ceanothus masonii
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 21, 2019).