Taxon Details
Ceanothus decornutus
Nicasio ceanothus
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© 2022 Roger Stephens |
© 2015 Robert Steers |
Taxon Summary:
Ceanothus decornutus, commonly known as Nicasio ceanothus, is a perennial shrub in the Rhamnaceae that is found only in California. It occurs within Chaparral, growing at elevations from 235 to 290 meters. Ceanothus decornutus is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Ceanothus decornutus V.T. Parker |
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Common Name: Nicasio ceanothus |
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| Family: | Rhamnaceae | |
| Element Code: | PDRHA04440 | |
| USDA Plants Symbol: | ||
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: added to 1B.2 on 2016-06-16 |
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| Add Date: | 2016-06-16 |
| Date Edited: | 2023-08-01 |
| Lifeform: perennial shrub | ||||||||||||||
Blooming Period: Mar-May
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Elevation:
235 - 290 meters 770 - 950 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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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. |
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Threats: Potentially threatened by non-native plants. Possibly threatened by insect herbivory. |
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Taxonomy: |
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| Threat List Total: | 2 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 1 | 50 % |
| THREAT LIST: | ||
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| Non-native plant impacts | 1 | 50% |
| Other | 1 | 50% |
| Total Occurrences: | 2 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 0 | 0 | 0 | 0 | 2 |
| Occurrence Status: | |||||
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| Historical >20 Years | 0 | ||||
| Recent <=20 Years | 2 | ||||
| Presence: | |||||
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| Presumed Extant | 2 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Marin (MRN) |
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Quads: Name (Quad Code) San Geronimo (3812216) |
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Notes:
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Presumed Extant
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