Rarity Status  |
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Occurrence Data from DFG
California Natural Diversity Database  |
- Total # of Known Element Occurrences:
196
- Element Occurrence Ranks:
Population Status:
Historic
>20 yrs |
Recent
<=20 yrs |
| 75 |
121 |
- Presence:
| Present Extant |
Possibly Extirpated |
Extirpated |
| 195 |
0 |
1 |
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Notes  |
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Locally common in Suisun Bay. Threatened by erosion, channel stabilization, development, flood control projects, recreation, agriculture, shading resulting from marsh succession, and competition with non-native Eichhornia crassipes. Many populations ephemeral, exploiting newly deposited or exposed sediments. Collection from Chicken Ranch Beach, MRN Co. (485D) is probably L. occidentalis. See Madroño 24(2):81 (1977) for original description.
-
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:
2010-03-15
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Location  |
- Elevation:
0 - 10 meters
- California Endemic:
yes
- States:
California
- California Counties and Islands:
name (code)
Alameda (ALA), Contra Costa (CCA), Marin (MRN), Napa (NAP), Sacramento (SAC), San Joaquin (SJQ), Solano (SOL), Yolo (YOL)
- Quads:
name (DWR code) USGS code
Holt (462B) 37121H4, Union Island (462C) 37121G4, Woodward Island (463A) 37121H5, Clifton Court Forebay (463D) 37121G5, Thornton (479B) 38121B4, Terminous (479C) 38121A4, Lodi South (479D) 38121A3, Isleton (480A) 38121B5, Rio Vista (480B) 38121B6, Jersey Island (480C) 38121A6, Bouldin Island (480D) 38121A5, Denverton (481B) 38121B8, Honker Bay (481C) 38121A8, Antioch North (481D) 38121A7, Fairfield South (482A) 38122B1, Benicia (482C) 38122A2, Vine Hill (482D) 38122A1, Cuttings Wharf (483A) 38122B3, Mare Island (483D) 38122A3, Inverness (485D) 38122A7, Bruceville (496C) 38121C4, Clarksburg (497A) 38121D5, Saxon (497B) 38121D6, Liberty Island (497C) 38121C6, Dozier (498D) 38121C7, Napa (500D) 38122C3
- Notes:
| Definitions of codes preceding a county and/or quad: |
| * |
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Presumed extirpated |
| ? |
| Uncertain about distribution or identity
|
| ?* |
| Uncertain about distribution, but presumed extirpated if once present
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| (?) |
| Occurrence confirmed, but possibly extirpated
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Species may be present in other areas where conditions are favorable.
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