Taxon  Report   1311 
Calochortus umbellatus  Wood
Oakland mariposa lily,  Oakland star tulip
Calochortus umbellatus
© 1997 Doreen L. Smith
Click on a photo to see it bigger.
Calochortus umbellatus
© 2013 John Doyen
Calochortus umbellatus
© 2013 Christopher Gurney
Calochortus umbellatus, a monocot, is a perennial herb (bulb) that is native to California and is endemic (limited) to California.
It is included in the CNPS Inventory of Rare and Endangered Plants on list 4.2 (limited distribution).   7th Edition  /  8th Edition

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Calochortus umbellatus
© 1997 Doreen L. Smith
Genus: Calochortus
Chaparral, Valley Grassland, Yellow Pine Forest, Mixed Evergreen Forest
AFFINITY to serpentine soil:   2.9 (strong indicator)   [Safford et al 2005]
Distribution by County 

Add an Observation of  Calochortus umbellatus

Name Status:
Accepted by TJM2 + CNPS + PLANTS + JM93
Alternate Names:
(according to)

ICPN: Calochortus collinus
More information about  Calochortus umbellatus
Nursery / seed vendor availability from CNPLX
This plant is available commercially.
Photos on CalPhotos / Google Images
Photos and ID tips from

Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Oct 23, 2016).

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