Allium atrorubens

Dark red onion
	Allium atrorubens found in the White Mountains in Esmeralda County, Nevada
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Amaryllidaceae
Subfamily:	Allioideae
Genus:	Allium
Species:	A. atrorubens
Binomial name
	Allium atrorubens; S. Wats.

Allium atrorubens is a species of wild onion known by the common name dark red onion. This plant is native to the southwestern United States where it grows in the sandy soils of the Mojave Desert, the Great Basin and higher-elevation deserts in Nevada, eastern California (San Bernardino, Kern, Mono, Inyo and Lassen Counties) southwestern Utah (Kane, Millard and Beaver Counties), northwestern Arizona (Mohave and Coconino Counties).[1][2]

Allium atrorubens grows from a reddish-brown bulb 1–1.5 cm (³⁄₈–⁵⁄₈ in) across. The stem is short and is surrounded by few coiled tubular leaves. Atop the stem is an inflorescence of up to 50 flowers. Each flower has six shiny, iridescent, sharply triangular tepals with dark midveins. The tepals are usually magenta to maroon but are lighter pink or white occasionally. Each flower is about 1 cm (³⁄₈ in) wide.[1][3][4]

References

Flora of North America Editorial Committee (ed.). "Allium atrorubens". Flora of North America North of Mexico (FNA). New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
"Allium atrorubens". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
Watson, Sereno (1871). "Botany". United States Geological Exploration of the Fortieth Parallel. 5. p. 352.
Cronquist, A.J.; Holmgren, A. H.; Holmgren, N. H.; Reveal (1977). "Vascular Plants of the Intermountain West, U.S.A.". In Cronquist, A.J.; Holmgren, A. H.; Holmgren, N. H.; Reveal, J. L.; Holmgren, P. K. (eds.). Intermountain Flora. 6. New York: Hafner Pub. Co. pp. 1–584.

External links

Jepson Manual Treatment
USDA Plants Profile
Allium atrorubens in the CalPhotos Photo Database, University of California, Berkeley

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[fna-1] Flora of North America Editorial Committee (ed.). "Allium atrorubens". Flora of North America North of Mexico (FNA). New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

[2] "Allium atrorubens". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.

[3] Watson, Sereno (1871). "Botany". United States Geological Exploration of the Fortieth Parallel. 5. p. 352.

[4] Cronquist, A.J.; Holmgren, A. H.; Holmgren, N. H.; Reveal (1977). "Vascular Plants of the Intermountain West, U.S.A.". In Cronquist, A.J.; Holmgren, A. H.; Holmgren, N. H.; Reveal, J. L.; Holmgren, P. K. (eds.). Intermountain Flora. 6. New York: Hafner Pub. Co. pp. 1–584.