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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Ordo: Asparagales

Familia: Amaryllidaceae
Subfamilia: Allioideae
Tribus: Allieae
Genus: Allium
Subgenus: A. subg. Amerallium
Sectio: A. sect. Lophioprason
Subsectio: A. subsect. Acuminata
Species: Allium peninsulare
Subspecies: A. p. subsp. franciscanum – A. p. subsp. peninsulare

Allium peninsulare Lemmon ex Greene, Pittonia 1: 165. 1888.,



International Plant Names Index. 2017. Allium peninsulare. Published online. Accessed: Sep 11 2017.
The Plant List 2013. Allium peninsulare in The Plant List Version 1.1. Published online. Accessed: 2017 Sep 11. 2017. Allium peninsulare. Missouri Botanical Garden. Published online. Accessed: 11 Sep 2017.
Govaerts, R. et al. 2017. Allium peninsulare in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2017 Sep 11. Reference page.

Vernacular names
English: Mexicali onion, Peninsula onion

Allium peninsulare is a North American species of wild onion.[1] It is known by such common names as Mexicali onion and Peninsula onion; the former referring to the Mexican city just south of the US/Mexican border, the latter referring to the Peninsula of Baja California. It is widespread in California, USA, where it grows in the California Coast Ranges, Sierra Nevada foothills, some of the Channel Islands, and Peninsular Ranges. The range extends south into the northernmost part of Baja California and north into southern Oregon.[3][4]

Allium peninsulare is usually found in Valley Grassland, Foothill Woodland, and Coastal Chaparral at elevations up to 1100 m (3660 feet). The plant produces a bulb 8–15 mm wide and has two to three channeled to more or less cylindrical leaves. Between May and July, it sends up a 12–45 cm scape topped with an umbel of 5–35 flowers, each on an 0.8–4 cm pedicel. The flowers are red-purple and have six triangular tepals. The three inner tepals are smaller than the outer ones and have teeth along the margins.[3][5][2]


A. peninsulare var. franciscanum McNeal & Ownbey[6] --- leaves arched; stigma, unlobed or obscurely 3- lobed --- central California from Mendocino County to Monterey County
A. peninsulare var. peninsulare — leaves straight, stigma strongly 3- lobed --- widespread from Baja California to Oregon

formerly included[1]

Allium peninsulare var. crispum (Greene) Jeps., now called Allium crispum Greene
See also

California montane chaparral and woodlands

Wikimedia Commons has media related to Allium peninsulare.
Wikispecies has information related to Allium peninsulare.

"Allium peninsulare", World Checklist of Selected Plant Families, Royal Botanic Gardens, Kew, retrieved 2015-04-16
Greene, Edward Lee. 1888. Pittonia 1(11): 165.
"Allium peninsulare in Flora of North America @".
Calflora Taxon Report 223, Allium peninsulare
Jepson Manual Treatment - Allium peninsulare
McNeal, Dale W. 1992. New taxa and combinations in North American Liliaceae. Phytologia 73(4): 307–311.

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