Taxon Report
Ceanothus decornutus V.T. ParkerNicasio ceanothus |
 © 2014 Vernon Smith |
Classification
|
Scientific Name: |
Ceanothus decornutus V.T. Parker |
|
Common Name: |
Nicasio ceanothus |
| Family: | Rhamnaceae |
| Element Code: | PDRHA04440 |
| USDA Plants Symbol: | |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | perennial shrub |
| Blooming Period: Mar-May | Mar-May |
| Elevation: | 235-290 (770-950) |
| General Habitats: | Chaparral |
| Microhabitat: | Clay (sometimes), Rocky, Serpentine |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G1 |
|
State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 2 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 2 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Marin (MRN) | |
| Quads: Name (Quad Code) | |
| San Geronimo (3812216) | |
Threat List Data from the CNDDB
| Threat List Total: | 2 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 50 % | |
| Non-native plant impacts | 1 | 50% |
| Other | 1 | 50% |
Notes
| Discovered in the 1980’s by Wilma Follette. 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: |
| Potentially threatened by non-native plants. Possibly threatened by insect herbivory. |
|
Taxonomy: |
Selected References
| Proposed Addition to CRPR 1B.2, G1 / S1 (2016) |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].