Taxon Report

Allium nevadense Wats.

Nevada onion

Print Report

Taxon Summary

Allium nevadense, commonly known as Nevada onion, is a perennial bulbiferous herb in the Alliaceae that is found in California and elsewhere. It occurs within Pinyon and juniper woodland (gravelly, and sandy), growing at elevations from 810 to 1700 meters. Allium nevadense is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Allium nevadense Wats.
Common Name:	Nevada onion
Family:	Alliaceae
Element Code:	PMLIL021J0
USDA Plants Symbol:	ALNE
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial bulbiferous herb
Blooming Period: Apr-May	Apr-May
Elevation:	810-1700 (2660-5580)
General Habitats:	Pinyon and juniper woodland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.3
Global Rank:	G4
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.3 to 2B.3 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	25
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	1
Fair (C)	1
Poor (D)	1
None (X)	0
Unknown (U)	22

Location


California Endemic: False
California Counties and Islands: Name (Code)
Inyo (INY), San Bernardino (SBD)
Quads: Name (Quad Code)
Calvada Springs (3511588), Castle Peaks (3511532), Clark Mtn. (3511555), Colton Well (3411584), Columbia Mtn. (3511514), Fountain Peak (3411585), Hackberry Mountain (3511512), Hart Peak (3511531), Horse Thief Springs (3511578), Ivanpah (3511533), Kingston Spring (3511558), Manly Peak (3511781), Mescal Range (3511545), Mesquite Mountains (3511566), Mid Hills (3511524), Mineral Hill (3511544)

Threat List Data from the CNDDB


Threat List Total:	7
EOs with Threat Listed:	Total EOs	% of EOs
	6	24 %
Non-native plant impacts	3	12%
Non-native animal impacts	2	8%
Development	1	4%
Foot traffic/trampling	1	4%
ORV activity	1	4%
Other	1	4%
Recreational use (non-ORV)	1	4%

Notes



Potentially threatened by wind energy development. See Botany of the King Exploration p. 351 (1871) for original description, and Madroño 39(2):83-89 (1992) for distribution in CA.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 20 February 2025].