Species Details

Ceanothus decornutus

Nicasio ceanothus

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Scientific Name:
Ceanothus decornutus V.T. Parker
Common Name:
Nicasio ceanothus
Family: Rhamnaceae
Element Code: PDRHA04440
USDA Plants Symbol:
Synonyms/Other Names:
Lifeform: perennial shrub
Blooming Period: Mar-May
Elevation:
235 - 290 meters
770 - 950 feet
General Habitat:
  • Chaparral (maritime)
General Micro Habitat:
Micro Habitat:
  • Clay (sometimes)
  • Rocky
  • Serpentinite
Notes:
Discovered in the 1980’s by Wilma Follette. Potentially threatened by non-native plants. Possibly threatened by insect herbivory. Similar to C. jepsonii; primarily differs from it in having 5-merous flowers that are white, light blue, or pink. See Madroño 61(4):399-406 (2014) for original description.
Threats:
Taxonomy:
Other:
Total Occurrences: 2
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 2
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 2
Presence:
Presumed Extant 2
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Marin (MRN)
Quads: Name (Quad Code)
San Geronimo (3812216)
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