Taxon Report

Sedum albomarginatum Clausen

Feather River stonecrop

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Taxon Summary

Sedum albomarginatum, commonly known as Feather River stonecrop, is a perennial herb in the Crassulaceae that is found only in California. It occurs within Chaparral, and Lower montane coniferous forest, growing at elevations from 260 to 1950 meters. Sedum albomarginatum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Sedum albomarginatum Clausen
Common Name:	Feather River stonecrop
Family:	Crassulaceae
Element Code:	PDCRA0A030
USDA Plants Symbol:	SEAL2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Jun	May-Jun
Elevation:	260-1950 (855-6400)
General Habitats:	Chaparral, Lower montane coniferous forest
Microhabitat:	Serpentine
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_UCSC; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	15
Element Occurrence Ranks:
Excellent (A)	2
Good (B)	6
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	7

Location


California Endemic: True
California Counties and Islands: Name (Code)
Butte (BUT), Plumas (PLU)
Quads: Name (Quad Code)
Almanor (4012122), Belden (4012113), Caribou (4012112), Pulga (3912174)

Threat List Data from the CNDDB


Threat List Total:	5
EOs with Threat Listed:	Total EOs	% of EOs
	8	53 %
Road/trail construction/maint.	6	40%
Erosion/runoff	3	20%
Logging	2	13%
Mining	1	6%
Improper burning regime	1	6%

Notes



Threatened by road construction and maintenance, horticultural collecting, and mining. Possibly threatened by road widening. See Sedum of North America North of the Mexican Plateau, p. 424-433 (1975) by R.T. Clausen for original description.
Threats:

Taxonomy:

Selected References

Sedum albomarginatum account for potential Species of Conservation Concern evaluation (2023)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 11 November 2025].