CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record clarkia_borealis_ssp._arida - Tue, Dec. 7, 2021, 19:45 ET b
Clarkia borealis ssp. arida
common nameShasta clarkia
CalPhotos image
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life formannual herb
CA Rare Plant Rank
List 1B.1
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.1: Seriously endangered in California
state rank
S2      ranking system key
global rank
G3T2      ranking system key
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (5):
Shingletown (627B) 4012148, Inskip Hill (627C)? 4012138, Oak Run (646A) 4012261, Clough Gulch (646D) 4012251, Devils Rock (664D) 4012271
quad data info

Counties, states, regions:
Shasta (SHA), Tehama (TEH)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Cismontane woodland (CmWld)
•Lower montane coniferous forest (LCFrs)(openings)
blooming period Jun-Aug  
elevation range490 - 595 meters
Known from fewer than 10 occurrences near Shingletown. Very similar to ssp. borealis; study needed. See Canadian Journal of Botany 49:1211-1217 (1971) for original description.
full nameClarkia borealis E. Small ssp. arida E. Small
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  CLBOA Element Code  PDONA05061
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Tue, Dec. 7, 2021 from

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