Taxon Report

Galium californicum H. & A. ssp. miguelense (Greene) Dempster & Steb.

San Miguel Island bedstraw

Print Report

Taxon Summary

Galium californicum ssp. miguelense, commonly known as San Miguel Island bedstraw, is a perennial herb in the Rubiaceae that is found only in California. It occurs within Cismontane woodland, and Coastal bluff scrub, growing at elevations from 30 to 60 meters. Galium californicum ssp. miguelense is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

Classification


Scientific Name:	Galium californicum H. & A. ssp. miguelense (Greene) Dempster & Steb.
Common Name:	San Miguel Island bedstraw
Family:	Rubiaceae
Element Code:	PDRUB0N0E5
USDA Plants Symbol:	GACAM2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Mar-Jul	Mar-Jul
Elevation:	30-60 (100-195)
General Habitats:	Cismontane woodland, Coastal bluff scrub
Microhabitat:	Sandy (sometimes)
Microhabitat Details:	grassy (sometimes)

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G5T3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: True
California Counties and Islands: Name (Code)
Santa Barbara (SBA)
Quads: Name (Quad Code)
San Miguel Island East (3312083), San Miguel Island West (3312084), Santa Rosa Island East (3311988), Santa Rosa Island North (3312081), Santa Rosa Island South (3312071), Santa Rosa Island West (3312082)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Threatened by feral herbivores and cattle grazing on SRO Isl. See Pittonia 1:34 (1887) for original description, and University of California Publications in Botany 46:32 (1968) and Flora of California 4(2):39-42 (1979) by L. Dempster for taxonomic treatments.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 10 November 2025].