CNPS Inventory Plant Detail

Oenothera californica ssp. eurekensis

Common Name:	Eureka Dunes evening-primrose
Family:	Onagraceae
Synonyms:	Oenothera avita ssp. eurekensis
Element Code:	PDONA0C071
Full Name:	Oenothera californica (Wats.) Wats. ssp. eurekensis (Munz & Roos) W. Klein
USDA PLANTS Symbol:	OECAE2

Biology
Lifeform: perennial rhizomatous herb Blooming Period: April - July Habitat: • Desert dunes

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: FE Endangered (04/26/78) State Listing Status: CR Rare (11/78) State Rank: S2 S2: Imperiled. Global Rank: G4?T2 T2: Imperiled. G4: (species) Apparently secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Historic >20 yrs	Recent <=20 yrs
0	3

Presence:

Present Extant	Possibly Extirpated	Extirpated
3	0	0

Notes

Known only from dunes in Eureka Valley, within Death Valley NP. Habitat previously degraded by vehicle traffic; populations recovering well, but still threatened by vehicle trespass, foot traffic, recreation, and non-native Russian thistle. Recovery plan has been completed by BLM. See Aliso 3(2):118 (1955) for original description, and Biological Conservation 46:217-242 (1988) for population biology.
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

Location

Elevation: 850 - 1200 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Inyo (INY)

Quads: name (DWR code) USGS code
Last Chance Range SW (390C) 37117A6, East of Joshua Flats (391A) 37117B7, East of Waucoba Spring (391D) 37117A7

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.

Presumed Extant

Presumed Extirpated or Unknown

1177

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-117.75,37.0