Allium sanbornii

Allium sanbornii is a North American species of wild onion known by the common name Sanborn's onion.Kew World Checklist of Selected Plant Families It is native to northern California and southwestern Oregon.Biota of North America Program 2014 county distribution map It grows in the serpentine soils of the southern Cascade Range and northern Sierra Nevada foothills.USDA Plants ProfileFlora of North America, Allium sanbornii

Allium sanbornii produces a reddish-brown bulb up to about long. Scape up to 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.Jepson Manual TreatmentWood, Alphonso. 1868. Proceedings of the Academy of Natural Sciences of Philadelphia 20(6): 171.

VarietiesCalflora Taxon Report 229, Allium sanbornii Alph. Wood, Sanborn's onion 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 includedDenison, S.S. & McNeal, Dale W. 1989. Madroño 36(2): 127-128 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

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