CNPS Inventory Plant Detail

Allium jepsonii

Common Name:	Jepson's onion
Family:	Alliaceae
Synonyms:
Element Code:	PMLIL022V0
Full Name:	Allium jepsonii (Traub) Denison & D. McNeal
USDA PLANTS Symbol:	ALJE

Biology
Lifeform: perennial bulbiferous herb Blooming Period: April - August Habitat: Serpentinite or volcanic. • Chaparral • Cismontane woodland • Lower montane coniferous forest

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S1 S1: Critically Imperiled. Global Rank: G1 G1: Critically Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 27
Element Occurrence Ranks:

A B C D X U

2 14 3 0 0 8

Population Status:

Historic >20 yrs	Recent <=20 yrs
4	23

Presence:

Present Extant	Possibly Extirpated	Extirpated
27	0	0

Notes
See Plant Life 28:63 (1972) for original description, and Madroño 36(2):122-130 (1989) for revised nomenclature. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1994-01-01 Last Update: 2011-04-14

Location

Elevation: 300 - 1320 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Butte (BUT), El Dorado (ELD), Placer (PLA), Tuolumne (TUO)

Quads: name (DWR code) USGS code
Tuolumne (457B) 37120H2, Sonora (458B) 37120H4, Shingle Springs (510B) 38120F8, Auburn (527A) 38121H1, Berry Creek (575B) 39121F4, Cherokee (576A) 39121F5, Pulga (591C) 39121G4, Stirling City (592A) 39121H5, Paradise East (592D) 39121G5

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

1556

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 .

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