Taxon Report

Ceanothus maritimus Hoov.

maritime ceanothus

Print Report

Classification


Scientific Name:	Ceanothus maritimus Hoov.
Common Name:	maritime ceanothus
Family:	Rhamnaceae
Element Code:	PDRHA040T0
USDA Plants Symbol:	CEMA
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial evergreen shrub
Blooming Period: Jan-Apr	Jan-Apr
Elevation:	10-150 (35-490)
General Habitats:	Chaparral, Coastal bluff scrub, Valley and foothill grassland
Microhabitat:	Clay
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G2
State Rank:	S2
State List:	CR
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	4
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	3
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	1

Location


California Endemic: True
California Counties and Islands: Name (Code)
San Luis Obispo (SLO)
Quads: Name (Quad Code)
Piedras Blancas (3512163), San Simeon (3512162)

Threat List Data from the CNDDB


Threat List Total:	3
EOs with Threat Listed:	Total EOs	% of EOs
	4	100 %
Grazing	4	100%
Development	1	25%
Foot traffic/trampling	1	25%

Notes



Known from fewer than ten occurrences; need current status information. Possibly threatened by grazing and foot traffic. See Leaflets of Western Botany 7(4):111-112 (1953) 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 8 January 2025].