Species Details

Ceanothus confusus

Rincon Ridge ceanothus

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Classification

Scientific Name: Ceanothus confusus J.T. Howell
Common Name: Rincon Ridge ceanothus
Family:	Rhamnaceae
Element Code:	PDRHA04220
USDA Plants Symbol:	CECO6
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	None
Global Rank:	G1
State Rank:	S1
Other Status:	BLM_S; SB_SBBG
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2021-10-04

Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: Feb-Jun
Elevation: 75 - 1065 meters 245 - 3495 feet
General Habitat: Closed-cone coniferous forest Chaparral Cismontane woodland
General Micro Habitat:
Micro Habitat: Serpentinite (sometimes) Volcanic (sometimes)

Notes

Notes: Threatened by development. Closely related to C. prostratus. See Leaflets of Western Botany 2:160-162 (1939) for original description.
Threats:
Taxonomy:
Other:

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					33
A	B	C	D	X	U
1	2	5	0	1	24

Occurrence Status:
Historical >20 Years	24
Recent <=20 Years	9

Presence:
Presumed Extant	32
Possibly Extirpated	0
Presumed Extirpated	1

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Lake (LAK), Mendocino (MEN), Napa (NAP), Sonoma (SON)

Quads: Name (Quad Code)
Bartlett Mtn. (3912227), Calistoga (3812255)?*, Camp Meeker (3812248), Cloverdale (3812371), Detert Reservoir (3812265), Geyserville (3812268), Guerneville (3812258), Kenwood (3812245), Mark West Springs (3812256), Mount St. Helena (3812266), Purdys Gardens (3912311), Rutherford (3812244), Santa Rosa (3812246), Sebastopol (3812247)*, Sonoma (3812234), St. Helena (3812254), The Geysers (3812277), Warm Springs Dam (3812361), Whispering Pines (3812276), Yorkville (3812382)

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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Counties Quads

CNPS Rare Plant Inventory