CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record claytonia_lanceolata_var._peirsonii - Sat, Nov. 27, 2021 13:25 ET c
Claytonia lanceolata var. peirsonii
common namePeirson's spring beauty
CalPhotos image
more photos
© 2009 Thomas Stoughton  Follow image link for photo data.
life formperennial herb
CA Rare Plant Rank
List 3.1
LIST 3: We need more information about this plant (Review List).
     0.1: Seriously endangered in California
state rank
S1      ranking system key
global rank
G5T1Q      ranking system key
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (4):
Cucamonga Peak (108A) 3411725, Fawnskin (131C) 3411638, Telegraph Peak (134D) 3411735, Crystal Lake (135D) 3411737
quad data info

Counties, states, regions:
San Bernardino (SBD)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Subalpine coniferous forest (SCFrs)
•Upper montane coniferous forest (UCFrs)/Scree
blooming period (Mar),May-Jun   Months in parentheses are uncommon.
elevation range1510 - 2745 meters
Previously CRPR 1B.1. Known only from the San Gabriel Mtns. Threatened by foot traffic, recreational activities, and proposed ski area expansion. Possibly threatened by vehicles. Angeles NF has adopted species management guidelines. A synonym of C. lanceolata in TJM (1993) and TJM 2. See Bulletin of the Torrey Botanical Club 49:352 (1922) for original description.
full nameClaytonia lanceolata Pursh var. peirsonii M. & J.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  CLLAP2 Element Code  PDPOR03097
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 Sat, Nov. 27, 2021 from

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