Taxon  Report   5001 
Lomatium observatorium  Constance & Ertter
Mt. hamilton lomatium
Lomatium observatorium
© 2012 Lynn Robertson
More photos from
CalPhotos / Calflora
Lomatium observatorium
© 2012 Lynn Robertson
Lomatium observatorium
© 2007 Tony Morosco
Lomatium observatorium, a dicot, is a perennial herb that is native to California.
CNPS Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).   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
Lomatium observatorium
© 2007 Tony Morosco
Family: APIACEAE  
Genus: Lomatium
AFFINITY to serpentine soil:   1.4 (weak indicator / indifferent)   [Safford et al 2005]
Distribution by County 

Add an Observation of  Lomatium observatorium

Name Status:
Accepted by JEF + CNPS + PLANTS
More information about  Lomatium observatorium
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria


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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Aug 16, 2018).

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