Species Details

Oenothera deltoides ssp. howellii

Antioch Dunes evening-primrose

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Scientific Name:
Oenothera deltoides Torr. & Frem. ssp. howellii (Munz) W. Klein
Common Name:
Antioch Dunes evening-primrose
Family: Onagraceae
Element Code: PDONA0C0B4
USDA Plants Symbol: OEDEH
Synonyms/Other Names:
Fed List: FE (1978-04-26)
State List: CE (1978-11-01)
Global Rank: G5T1
State Rank:
S1
CA Rare Plant Rank: 1B.1
Other Status: SB_CalBG/RSABG; SB_UCBG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-05-26
Notes:
Occurrences from SAC Co. (480C) and CCA Co. (481C) are introduced. Seriously threatened by mining, agriculture, industrial development, and non-native plants. Recovery work in progress. Protected in part at Antioch Dunes NWR (USFWS). See Aliso 2:81 (1949) for original description, Four Seasons 3(1):2-4 (1969) for threat information, and Biological Conservation 65:257-278 (1993) for population biology.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 10
Element Occurrence Ranks:
A B C D X U
0 0 4 1 1 4
Occurrence Status:
Historical >20 Years 6
Recent <=20 Years 4
Presence:
Presumed Extant 9
Possibly Extirpated 1
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Contra Costa (CCA), Sacramento (SAC)
Quads: Name (Quad Code)
Antioch North (3812117), Brentwood (3712186), Clayton (3712188), Honker Bay (3812118), Jersey Island (3812116), Walnut Creek (3712281)
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