Taxon Report

Graphis saxorum Egea & Torrente

Baja rock lichen

Print Report

Taxon Summary

Graphis saxorum, commonly known as Baja rock lichen, is a crustose lichen (saxicolous) in the Graphidaceae that is found in California and elsewhere. It occurs within Coastal scrub, growing at elevations from 30 to 80 meters. Graphis saxorum is ranked 3, Plants About Which We Need More Information, A Review List.

Classification


Scientific Name:	Graphis saxorum Egea & Torrente
Common Name:	Baja rock lichen
Family:	Graphidaceae
Element Code:	NLTES29470
USDA Plants Symbol:	GRSA3
Synonyms/Other Names:

Ecology and Life History


Lifeform:	crustose lichen (saxicolous)
Blooming Period:
Elevation:	30-80 (100-260)
General Habitats:	Coastal scrub
Microhabitat:
Microhabitat Details:	Volcanic rocks

Conservation Status


CA Rare Plant Rank:	3
Global Rank:	G1G2
State Rank:	S1
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	added to 3 on 2014-03-01

Occurrence Data from the CNDDB


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

Location


California Endemic: False
California Counties and Islands: Name (Code)
Los Angeles (LAX)
Quads: Name (Quad Code)
Santa Catalina North (3311844), Santa Catalina West (3311845)

Threat List Data from the CNDDB


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

Notes



Added to CRPR 3 based on prior inclusion in CNDDB; CALS Conservation Committee sponsorship is pending. Known in CA only from vicinity of Isthmus Cove and Little Harbor on SCT Is. See The Bryologist 100(2):207-209 (1997) for original description.
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 16 November 2025].