Allium yosemitense

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Yosemite onion
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Amaryllidaceae
Subfamily: Allioideae
Genus: Allium
Species: A. yosemitense
Binomial name
Allium yosemitense

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.[1][2][3]


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.[1][4][5][6]

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).[1]

Allium yosemitense is listed by the State of California as Rare, and included in the California Native Plant Society—CNPS Inventory of Rare and Endangered Plants.[7]

See also[edit]