Species Details

Ceanothus confusus

Rincon Ridge ceanothus

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Scientific Name:
Ceanothus confusus J.T. Howell
Common Name:
Rincon Ridge ceanothus
Family: Rhamnaceae
Element Code: PDRHA04220
USDA Plants Symbol: CECO6
Synonyms/Other Names:
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:
Threatened by development. Closely related to C. prostratus. See Leaflets of Western Botany 2:160-162 (1939) for original description.
Threats:
Taxonomy:
Other:
Total Occurrences: 33
Element Occurrence Ranks:
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
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.

Map

Presumed Extant
Counties   Quads