Rarity Status  |
|
|
Occurrence Data from CDFW
California Natural Diversity Database  |
- Total # of Known Element Occurrences:
76
- Element Occurrence Ranks:
Population Status:
Historic
>20 yrs |
Recent
<=20 yrs |
26 |
50 |
- Presence:
Present Extant |
Possibly Extirpated |
Presumed Extirpated |
65 |
10 |
1 |
|
|
Notes  |
- Once rather common in proper habitat; now greatly reduced by development. Also threatened by foot traffic, non-native plants, hydrological alterations, cattle grazing and trampling. State listed as Endangered in OR. See Proceedings of the California Academy of Science 1:61 (1855) for original description, Brittonia 25:135-158 (1973) for taxonomic treatment, and MadroƱo 41(4):316-327 (1994) for ecological discussion.
-
To submit rare plant observation data, use the
CNDDB field survey form.
Please see also the CNPS
Rare Plant Data page.
- Date Added:
1974-01-01
- Last Update:
2011-03-03
|
|
|
Location  |
- Elevation:
0 - 10 meters
- California Endemic:
no
- Other States:
Oregon
- California Counties and Islands:
name (code)
Alameda (ALA) *, Humboldt (HUM), Marin (MRN), Santa Clara (SCL) *, San Francisco (SFO), San Mateo (SMT) *, Sonoma (SON)
- Quads:
name (DWR code) USGS code
Milpitas (427B)* 3712148, Mountain View (428A)* 3712241, San Leandro (447B)* 3712262, Redwood Point (447C)* 3712252, San Mateo (448D)* 3712253, Richmond (466A) 3712283, San Quentin (466B)* 3712284, San Francisco North (466C) 3712274, Oakland West (466D)* 3712273, San Rafael (467A) 3712285, Bolinas (467B) 3712286, Petaluma River (484A) 3812225, Novato (484D) 3812215, Point Reyes NE (485A) 3812227, Tomales (485B) 3812228, Drakes Bay (485C) 3812218, Inverness (485D) 3812217, Valley Ford (502C) 3812238, Bodega Head (503D) 3812331, Fields Landing (654B) 4012462, Cannibal Island (655A) 4012463, Tyee City (672B) 4012482, Eureka (672C) 4012472, Arcata South (672D) 4012471
- Notes:
Definitions of codes preceding a county and/or quad: |
* |
|
Presumed extirpated |
? |
| Uncertain about distribution or identity
|
?* |
| Uncertain about distribution, but presumed extirpated if once present
|
(?) |
| Occurrence confirmed, but possibly extirpated
|
|
Species may be present in other areas where conditions are favorable.
This data should NOT be substituted for pre-project review or for on-site surveys.
|
|
|
|