CNPS Inventory Plant Detail

Allium sanbornii var. sanbornii

Common Name:	Sanborn's onion
Family:	Alliaceae
Synonyms:
Element Code:	PMLIL02212
Full Name:	Allium sanbornii A.W. Wood var. sanbornii
USDA PLANTS Symbol:	ALSAS

Biology
Lifeform: perennial bulbiferous herb Blooming Period: May - September Habitat: usually serpentinite, gravelly. • Chaparral • Cismontane woodland • Lower montane coniferous forest

Rarity Status
CA Rare Plant Rank: 4.2 Uncommon in California .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S3.2 S3: Vulnerable. .2: Threatened. Global Rank: G3T3 T3: Vulnerable. G3: (species) Vulnerable.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences:
Element Occurrence Ranks:

A B C D X U

Population Status:

Historic >20 yrs	Recent <=20 yrs

Presence:

Present Extant	Possibly Extirpated	Extirpated

This data is not available for all Rare Plant Rank 3 and 4 plants.

Notes

Known from small, widely scattered populations. Possibly threatened by logging, vehicles, and road maintenance. On review list in OR. See Proceedings of the Academy of Natural Sciences of Philadelphia 20:171 (1868) for original description, and Madroño 36(2):122-130 (1989) for taxonomic treatment.
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: 2011-07-25

Location

Elevation: 260 - 1510 meters

California Endemic: no

States: California, Oregon

California Counties and Islands: name (code)
Butte (BUT), Calaveras (CAL), El Dorado (ELD), Nevada (NEV), Placer (PLA), Plumas (PLU), Shasta (SHA), Tehama (TEH), Tuolumne (TUO), Yuba (YUB)

Quads: name (DWR code) USGS code
Cherry Lake South (456B) 37119H8, Murphys (475B) 38120B4, Westville (540B) 39120B6, Michigan Bluff (540C) 39120A6, Greek Store (540D) 39120A5, Dutch Flat (541A) 39120B7, Chicago Park (541B) 39120B8, Foresthill (541D) 39120A7, Grass Valley (542A) 39121B1, Washington (557D) 39120C7, Challenge (558B) 39121D2, Nevada City (558D) 39121C1, Rackerby (559A) 39121D3, Clipper Mills (574C) 39121E2, Brush Creek (575A) 39121F3, Paradise East (592D) 39121G5, Devils Parade Ground (608C) 40121A6, Lyonsville (626C) 40121C6, Manton (627A) 40121D7, Inskip Hill (627C) 40121C8, Project City (647A) 40122F3, Shasta Dam (647B) 40122F4, Igo (648D) 40122E5

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.

Quad data is not available for all List 3 and 4 plants. For those that do contain this data, it has not been quality controlled and is potentially incomplete, inaccurate, and/or out of date. Please use caution when referencing this information. We are currently working hard to maintain this data and hope to provide accurate and up to date information in the near future.

Presumed Extant

Presumed Extirpated or Unknown

1559

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 .

-121.125,39.5