Home/Species/ Sanborn's Onion

Allium sanbornii

Wood

Sanborn's Onion

G3Vulnerable Found in 4 roadless areas NatureServe Explorer →

G3VulnerableGlobal Rank

Identity

Unique IDELEMENT_GLOBAL.2.155699

Element CodePMLIL02210

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single nation

KingdomPlantae

PhylumAnthophyta

ClassMonocotyledoneae

OrderAsparagales

FamilyAmaryllidaceae

GenusAllium

Concept Reference

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Conservation Status

Review Date1999-05-14

Change Date1998-02-01

Edition Date1999-05-14

Edition AuthorsGries, D.

Rank Reasons

Allium sanbornii is an uncommon species which occurs as two varieties in northern California and disjunctedly as a single, isolated population in southern Oregon. A. sanbornii var. sanbornii is widely scattered, occurring generally in small populations, while A. sanbornii var. congdonii frequently occurs in large populations.

Range Extent Comments

Allium sanbornii var. sanbornii is known from the foothills at the north end of the Sacramento Valley, along the western slope of the Sierra Nevada from Shasta to Calaveras County, California, and from a single, isolated population in central Jackson County, Oregon. A. sanbornii var. congdonii is disjunct in Nevada, Placer, Tuolumne, and Mariposa Counties, California (Denison and McNeal 1989).

Occurrences Comments

In Oregon, Allium sanbornii var. sanbornii is known from a single, isolated population (Denison and McNeal 1989).

Ecology & Habitat

Other Nations (1)

United StatesN3

Province	Rank	Native
California	SNR	Yes

Plant Characteristics

Economic Value (Genus)Yes

Roadless Areas (4)

California (4)

Area	Forest	Acres
Chips Creek	Lassen National Forest	29,089
Ishi	Lassen National Forest	21,805
North Fork Middle Fork American River	Tahoe National Forest	11,245
Polk Springs	Lassen National Forest	9,466

References (4)

Denison, S. S., and D. W. McNeal. 1989. A re-evaluation of the <i>Allium sanbornii</i> (Alliaceae) complex. Madrono 36(2):122-130.
Flora of North America Editorial Committee (FNA). 2002a. Flora of North America north of Mexico. Vol. 26. Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York. xxvi + 723 pp.
Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.