CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record acmispon_rubriflorus - Sun, Nov. 28, 2021 13:20 ET c
Acmispon rubriflorus
common namered-flowered bird's-foot trefoil
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
G2     G2: 6-20 occurrences OR 1,000-3,000 individuals OR 2,000-10,000 acres
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (6):
Copper Mountain (425A) 3712143, Mount Boardman (425B) 3712144, Lodoga (563C) 3912234, Gilmore Peak (564D) 3912235, Hall Ridge (596C) 3912276, Dales (628D) 4012231
quad data info

Counties, states, regions:
Colusa (COL), Stanislaus (STA), 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)
•Valley and foothill grassland (VFGrs)
blooming period Apr-Jun  
elevation range200 - 425 meters
Known from only four disjunct occurrences. Threatened by development, and probably by grazing and non-native plants. Field work needed. See Madroņo 6(2):56 (1941) for original description.
full nameAcmispon rubriflorus (Sharsm.) D.D. Sokoloff
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym   Element Code  PDFAB2A150
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
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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 Sun, Nov. 28, 2021 from

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