Allium yosemitense is a species of wild onion known by the common name Yosemite onion.
Allium yosemitense grows from a bulb two to three centimeters long, producing a scapeup to about 23 centimetres (9.1 in) in maximum height. It has two long flat leaves that are usually slightly longer than the scape. The umbel conains up to 50 white or pink flowers, each on a pedicel which may be over 3 centimetres (1.2 in) long.
Allium yosemitense is endemic to the central Sierra Nevada of California, where it is known from only a few areas in the vicinity of Yosemite Valley and in Yosemite National Park in Mariposa and Tuolumne Counties.
The habitats it can be found in include: California interior chaparral and foothill woodlands, Sierra Nevada lower montane forest (Yellow Pine Forest), Mediterranean California Lower Montane Black Oak-Conifer Forest (Mixed Evergreen Forest).
- Calflora database — Allium yosemitense . accessed 1.30.2013
- eFloras . accessed 1.30.2013
- USDA Plants Profile: Allium yosemitense
- Jepson Manual Treatment - Allium yosemitense
- Flora of North America: Allium yosemitense
- Allium yosemitense — U.C. Photo gallery
- CNPS Inventory of Rare and Endangered Plants: Allium yosemitense . accessed 1.30.2013
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