Allium sanbornii

Allium sanbornii is a North American species of wild onion known by the common name Sanborn's onion.^[3] It is native to northern California and southwestern Oregon.^[4] It grows in the serpentine soils of the southern Cascade Range and northern Sierra Nevada foothills.^[5][6]

Allium sanbornii
Allium sanbornii var. congdonii[1]
Conservation status
Vulnerable  (NatureServe)[2]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Amaryllidaceae
Subfamily:	Allioideae
Genus:	Allium
Subgenus:	A. subg. Amerallium
Species:	A. sanbornii
Binomial name
Allium sanbornii Alph.Wood
Synonyms[3]
Allium intactum Jeps. Allium sanbornii subsp. intactum (Jeps.) Traub

Allium sanbornii produces a reddish-brown bulb up to about 2.5 cm (1 in) long. Scape up to 60 cm (24 in) long, bearing a single cylindrical leaf which is about the same length. The umbel contains as many as 150 small flowers, each with tepals less than a centimeter long, pink to white with darker red midveins. Anthers are yellow or purple; pollen yellow or white.^[6][7][8]

Varieties^[3][9]

• Allium sanbornii var. congdonii Jeps. - from Nevada County to Mariposa County
• Allium sanbornii var. sanbornii - from Shasta County to Mariposa County in California; Jackson + Josephine Counties in Oregon

formerly included^[3][10]

• Allium sanbornii var. jepsonii Ownbey & Aase ex Traub, now called Allium jepsonii (Ownbey & Aase ex Traub) S.S.Denison & McNeal
• Allium sanbornii var. tuolumnense Ownbey & Aase ex Traub, now called Allium tuolumnense (Ownbey & Aase ex Traub) S.S.Denison & McNeal