Species Details

Oenothera wolfii

Wolf's evening-primrose

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Classification

Scientific Name: Oenothera wolfii (Munz) Raven, Dietrich & Stubbe
Common Name: Wolf's evening-primrose
Family:	Onagraceae
Element Code:	PDONA0C1K0
USDA Plants Symbol:	OEWO
Synonyms/Other Names: Oenothera hookeri ssp. wolfii

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S1
Other Status:	BLM_S; SB_BerrySB
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Oct

Elevation:
3 - 800 meters
10 - 2625 feet

General Habitats:

Coastal bluff scrub
Coastal dunes
Coastal prairie
Lower montane coniferous forest

Microhabitat Details:

Microhabitat:

Mesic (usually)
Sandy

Notes

Notes:
Threats: Threatened by road maintenance, development, foot traffic, invasive plant control, non-native plants, and hybridization with non-native Oenothera spp. State-listed as Threatened in OR.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	14
	Total EOs	% of EOs
EOs with Threat Listed:	18	62 %
Road/trail construction/maint.	13	44%
Hybridization	11	37%
Foot traffic/trampling	8	27%
Non-native plant impacts	8	27%
Erosion/runoff	6	20%
ORV activity	3	10%
Other	3	10%
Recreational use (non-ORV)	2	6%
Development	2	6%
Wood cutting or brush clearing	2	6%
Landfill	1	3%
Vandalism/dumping/litter	1	3%
Altered flood/tidal/hydrologic regime	1	3%
Biocides	1	3%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					29
A	B	C	D	X	U
1	9	5	2	0	12

Occurrence Status:
Historical >20 Years	20
Recent <=20 Years	9

Presence:
Presumed Extant	29
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR)

California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Mendocino (MEN), Trinity (TRI)

Quads: Name (Quad Code)
Ah Pah Ridge (4112348), Arcata North (4012481), Cape Mendocino (4012444), Capetown (4012443), Carrville (4112216), Crannell (4112411), Crescent City (4112472), Eureka (4012472), Inglenook (3912357), Klamath Glen (4112358), Orick (4112431), Orleans (4112335), Point Arena (3812386), Requa (4112451), Salyer (4012385), Saunders Reef (3812376), Sister Rocks (4112462), Smith River (4112482), Willow Creek (4012386)

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.

Regional Map

Map

Presumed Extant

Click on quad for name. Hold Shift Key to use mouse scroll wheel

Selected References

Original Description:	Aliso 2:16 (1949)
Revised Nomenclature:	Systematic Botany 4:242-252 (1979)
Species Account:	Oenothera wolfii profile for potential Species of Conservation Concern evaluation (2018)
Other:	USFS Potential Species of Conservation Concern Profile