Taxon  Report   11922 
Petrophytum caespitosum  (Nutt.) Rydb.  ssp. caespitosum 
Rock spiraea
Petrophytum caespitosum ssp. caespitosum
© 2009 Steve Matson
More photos from
CalPhotos / Calflora
Petrophytum caespitosum ssp. caespitosum
© 2009 Steve Matson
Petrophytum caespitosum ssp. caespitosum
© 2012 Neal Kramer
Petrophytum caespitosum ssp. caespitosum, a dicot, is a shrub that is native to California and is also found outside of California, but is confined to western North America.

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Petrophytum caespitosum ssp. caespitosum
© 2005 James M. Andre
Family: ROSACEAE  
Genus: Petrophytum
Parent Record Petrophytum caespitosum
Distribution by County 

Add an Observation of  Petrophytum caespitosum ssp. caespitosum

Name Status:
Accepted by JEF
PLANTS accepted name: Petrophytum caespitosum var. caespitosum
Alternate Names:
(according to)

ICPN: Petrophyton caespitosum ssp. caespitosum
ICPN: Petrophytum caespitosum var. caespitosum
More information about  Petrophytum caespitosum ssp. caespitosum
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on

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: Jul 22, 2018).

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