The onion, also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus Allium. The shallot is a botanical variety of the onion. Until 2010, the shallot was classified as a separate species.
Scallions are vegetables derived from various species in the genus Allium. Scallions have a milder taste than most onions. Their close relatives include garlic, shallot, leek, chive, and Chinese onions.
Allium tricoccum is a North American species of wild onion widespread across eastern Canada and the eastern United States. Many of the common English names for this plant are also used for other Allium species, particularly the similar Allium ursinum, which is native to Europe and Asia.
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 sphaerocephalon is a plant species in the Amaryllis family known as round-headed leek, round-headed garlic, ball-head onion, and other variations on these names. Drumstick allium is another common name applied to this species. Some publications use the alternate spelling Allium sphaerocephalum. It is a bulbous herbaceous perennial plant.
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 hyalinum is a Californian species of wild onion known by the common name glassy onion.
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 roseum, commonly called rosy garlic, is an edible, Old World species of wild garlic. It is native to the Mediterranean region and nearby areas, with a natural range extending from Portugal and Morocco to Turkey and the Palestine region. It is cultivated widely, and has become naturalised in scattered locations in other regions outside its natural range.
Allium cyathophorum is a Chinese species of flowering plant in the onion genus Allium of the family Amaryllidaceae. It grows at elevations from 2700 metres up to 4600 metres.
Allium hymenorhizum is a Eurasian species of wild onion in the amaryllis family. It grows at elevations of 1100–2700 m
Allium korolkowii is a plant species native to Central Asia. It grows at elevations of 1500–2500 m.
Allium lineare is a Eurasian species of wild onions with a wide range extending from France to Mongolia.
Allium plurifoliatum is a Chinese species of wild onion. It has been reported from Anhui, Gansu, Hubei, Shaanxi, and Sichuan at elevations of 1600–3300 m.
Allium tenuissimum is an Asian species of wild onion native to Mongolia, Asiatic Russia, Korea, Kazakhstan and China.
Allium hirtovaginatum is a species of wild onion native to the Mediterranean region, from Morocco and the Balearic Islands to Turkey.
Allium pallens is a species of wild onion native to the Mediterranean region and Middle East from Portugal and Algeria to Iran.
Allium subvillosum, Spring Garlic, is a European and North African species of wild onion native to southern Spain, the Balearic Islands, southern Portugal, Sicily and northern Africa.
Allium subhirsutum, the hairy garlic, is a plant species widespread around the Mediterranean region from Spain and the Canary Islands to Turkey and Palestine.
