Taxon Details

Ceanothus maritimus

maritime ceanothus

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Taxon Summary:

Ceanothus maritimus, commonly known as maritime ceanothus, is a perennial evergreen shrub in the Rhamnaceae that is found only in California. It occurs within Chaparral (maritime), Coastal bluff scrub, and Valley and foothill grassland, growing at elevations from 10 to 150 meters. Ceanothus maritimus is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Ceanothus maritimus Hoov.
Common Name: maritime ceanothus
Family:	Rhamnaceae
Element Code:	PDRHA040T0
USDA Plants Symbol:	CEMA
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	CR (1978-11-01)
Global Rank:	G2
State Rank:	S2
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-10-04

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: Jan-Apr

Elevation:
10 - 150 meters
35 - 490 feet

General Habitats:

Coastal bluff scrub
Chaparral (maritime)
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Clay

Notes

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:

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					4
A	B	C	D	X	U
0	3	0	0	0	1

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	2

Presence:
Presumed Extant	4
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Luis Obispo (SLO)

Quads: Name (Quad Code)
Piedras Blancas (3512163), San Simeon (3512162)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory