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Allium sanbornii 
Summary
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] | |
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 | |
| Synonyms[3] | |
| |
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]
- 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
- 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
References edit
- ^ photo of herbarium specimen at Jepson Herbarium, University of California @ Berkeley, collected in 2005 in Nevada County, California
- ^ "NatureServe Explorer 2.0".
- ^ a b c d Kew World Checklist of Selected Plant Families
- ^ Biota of North America Program 2014 county distribution map
- ^ USDA Plants Profile
- ^ a b Flora of North America, Allium sanbornii
- ^ Jepson Manual Treatment
- ^ Wood, Alphonso. 1868. Proceedings of the Academy of Natural Sciences of Philadelphia 20(6): 171.
- ^ Calflora Taxon Report 229, Allium sanbornii Alph. Wood, Sanborn's onion
- ^ Denison, S.S. & McNeal, Dale W. 1989. Madroño 36(2): 127-128