Allium canadense, the Canada onion, Canadian garlic, wild garlic, meadow garlic and wild onion is a perennial plant native to eastern North America from Texas to Florida to New Brunswick to Montana. The species is also cultivated in other regions as an ornamental and as a garden culinary herb. The plant is also reportedly naturalized in Cuba.
Allium validum, known by several common names including swamp onion, wild onion, Pacific onion, and Pacific mountain onion, is native to the Cascade Range, to the Sierra Nevada, the Rocky Mountains, and other high-elevation regions in California, Oregon, Washington, Nevada, Idaho and British Columbia.
Allium cernuum, known as nodding onion or lady's leek, is a perennial plant in the genus Allium. It grows in dry woods, rock outcroppings, and prairies. It has been reported from much of the United States, Canada and Mexico including in the Appalachian Mountains from Alabama to New York State, the Great Lakes Region, the Ohio and Tennessee River Valleys, the Ozarks of Arkansas and Missouri, and the Rocky and Cascade Mountains of the West, from Mexico to Washington. It has not been reported from California, Nevada, Florida, Louisiana, Mississippi, New Jersey, Delaware, New England, or much of the Great Plains. In Canada, it grows from Ontario to British Columbia.
Allium unifolium, the one-leaf onion or American garlic, is a North American species of wild onion. It is native to the coastal mountain ranges of California, Oregon, and Baja California. It grows on clay soils including serpentine, at elevations up to 1100 m.
Allium acuminatum, also known as the tapertip onion or Hooker's onion, is a species in the genus Allium native to North America.
Allium peninsulare is a North American species of wild onion. 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.
Allium amplectens is a species of wild onion known by the common name narrowleaf onion. It is native to British Columbia, Oregon, Washington State and California, where it grows in woods and especially in clay and serpentine soils.
Allium falcifolium is a North American species of wild onion known by the common name scytheleaf onion or coast flatstem onion. It is native to northern California and southern Oregon, where it grows in heavy, rocky soils, especially serpentine soils.
Allium fimbriatum is a species of wild onion known by the common name fringed onion. It is native to California and Baja California.
Allium shevockii is a rare species of wild onion known by the common name Spanish Needle onion. It is found only in a limited area in the southern Sierra Nevada of California.
Allium tuolumnense is a rare species of wild onion, known by the common name Rawhide Hill onion.
Allium abramsii is a species of wild onion known by the common name Abrams' onion.
Allium bolanderi is a species of wild onion known by the common name Bolander's onion. It is native to northern California and southwestern Oregon, where it grows in the rocky soils of the Klamath Mountains and surrounding regions.
Allium diabolense, common name serpentine onion or devil's onion is a species of wild onion endemic to central California, where it is known from the Coast Ranges and the Transverse Ranges. It grows on serpentine soils at elevations from 500–1500 m, from Kern and Ventura Counties north to Stanislaus and Santa Clara Counties.
Allium howellii is a North American species of wild onion known by the common name Howell's onion. It is endemic to California.
Allium sanbornii is a North American species of wild onion known by the common name Sanborn's onion. It is native to northern California and southwestern Oregon. It grows in the serpentine soils of the southern Cascade Range and northern Sierra Nevada foothills.
Allium siskiyouense is a North American species of wild onion known by the common name Siskiyou onion. It is native to the Klamath Mountains and nearby ranges of northern California and Oregon. It grows in serpentine and other rocky soil types.
Allium sharsmithiae, called the Mount Hamilton onion or Helen Sharsmith's onion, is a rare species of wild onion endemic to a small region in California. It is found on serpentine soils in the vicinity of Mount Hamilton, in the Diablo Range south of San Francisco Bay in Santa Clara, Alameda and Stanislaus Counties.
Allium tolmiei is a plant species native to Idaho, eastern and central Oregon, southeastern Washington, northwestern Nevada and northeastern California. It occurs on mountains and scrublands at elevations of 1,300–9,200 feet (400–2,800 m). It was discovered by and named for Dr. William Fraser Tolmie.
