Taxon Details

Ceanothus pendletonensis

Pendleton ceanothus

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Taxon Summary:

Ceanothus pendletonensis, commonly known as Pendleton ceanothus, is a perennial shrub in the Rhamnaceae that is found only in California. It occurs within Chaparral, and Cismontane woodland, growing at elevations from 110 to 870 meters. Ceanothus pendletonensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Ceanothus pendletonensis D. O. Burge, Rebman & M. R. Mulligan
Common Name: Pendleton ceanothus
Family:	Rhamnaceae
Element Code:	PDRHA04450
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G1
State Rank:	S1
Other Status:	SB_CRES
CRPR Changes: added to 1B.2 on 2019-01-30
Add Date:	2019-01-30
Date Edited:	2023-08-01

Ecology and Life History

Lifeform: perennial shrub

Blooming Period: Mar-Jun

Elevation:
110 - 870 meters
360 - 2855 feet

General Habitats:

Chaparral
Cismontane woodland

Microhabitat Details:

Microhabitat:

Granitic

Notes

Notes: Similar to C. leucodermis and C. spinosus; differentiated by warty stem texture and shorter leaves.
Threats: Possibly threatened by road widening and military activities.
Taxonomy:

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					10
A	B	C	D	X	U
0	0	0	0	0	10

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	10

Presence:
Presumed Extant	10
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Diego (SDG)

Quads: Name (Quad Code)
Fallbrook (3311743), Margarita Peak (3311744)

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 Status Review:	Proposed Addition to CRPR 1B.2, G1 / S1 (2019)
Original Description:	Systematic Botany 42(3):529-542 (2017)

CNPS Rare Plant Inventory