Calflora
Taxon  Report   9794    
Cephalanthus occidentalis  L.
Common buttonbush
Cephalanthus occidentalis
© 2007 Stacie Sherman
Photos from
CalPhotos / Calflora
Cephalanthus occidentalis
© 2008 Louis-M. Landry
Cephalanthus occidentalis
© 2016 Keir Morse
Cephalanthus occidentalis, a dicot, is a shrub 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)



point, line, or polygon

Plant Characteristics
and Associations



Bloom Period
Cephalanthus occidentalis
© 2018 Richard Spjut
Family: RUBIACEAE  
Genus: Cephalanthus
Communities: Foothill Woodland, Valley Grassland, Mixed Evergreen Forest, wetland-riparian

Wetlands: Occurs in wetlands

Habitat: streambanks

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
ICPN + PLANTS: Cephalanthus occidentalis var. californicus
PLANTS: Cephalanthus occidentalis var. pubescens
More information about  Cephalanthus occidentalis
Nursery / seed vendor availability from CNPLX
This plant is available commercially.
Landscaping information from Calscape
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

USDA PLANTS Profile (CEOC2)

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: Dec 14, 2018).

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