An 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 which was classified as a separate species until 2011. Its close relatives include garlic, scallion, leek, and chive.
Allium tuberosum is a species of plant native to the Chinese province of Shanxi, and cultivated and naturalized elsewhere in Asia and around the world.
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 neapolitanum is a bulbous herbaceous perennial plant in the onion subfamily within the Amaryllis family. Common names include Neapolitan garlic, Naples garlic, daffodil garlic, false garlic, flowering onion, Naples onion, Guernsey star-of-Bethlehem, star, white garlic, and wood garlic.
Allium validum is a species of flowering plant commonly called swamp onion, wild onion, Pacific onion, or Pacific mountain onion. It 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. It is a perennial herb and grows in swampy meadows at medium and high elevations.
Colpodium is a genus of plants in the grass family, native primarily to Asia but with a few species on certain mountains in Africa.
The Western Himalayan subalpine conifer forests is a temperate coniferous forests ecoregion of the middle and upper elevations of the western Middle Himalayas of Nepal, India, and Pakistan.
Allium przewalskianum is an Asian species of wild onion in the Amaryllis family.
Allium victorialis, commonly known as victory onion, Alpine leek, and Alpine broad-leaf allium is a broad-leaved Eurasian species of wild onion. It is a perennial of the Amaryllis family that occurs widely in mountainous regions of Europe and parts of Asia.
Allium atrosanguineum is an Asian species of onion native to China, Siberia, Mongolia, and Central Asia. It grows high in the mountains at elevations of 2400–5400 m.
Allium carolinianum is a species of onions native to central and southern Asia. It grows in sunlit slopes at elevations of 3000–5000 m.
Allium hookeri is a plant species native to India, Sri Lanka, Myanmar (Burma), Bhutan, and southwestern China. Common names include Hooker chives and garlic chives.
Allium listera is a species of wild onion endemic to China. It is known from the provinces Anhui, Hebei, Henan, Jilin, Shaanxi, and Shanxi. It grows in forests and pastures at elevations of 600–2000 m.
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 roborowskianum is an Asian species of wild onion native to Xinjiang and Mongolia. It grows at elevations of 1000–1300 m.
Allium rude is a Chinese species of wild onion native to Gansu, Qinghai, Sichuan, and Tibet, at elevations of 2700–5000 m.
Allium gilgiticum is an Asian species of onion, a rare and quite possibly extinct species. It is known only from the type collection, gathered in the 1930s in Gilgit District in Pakistan, high in the Himalayas, part of the Kashmir region long disputed with India. The plant is about 50 cm tall, with a hemispheric umbel of purple flowers.
Iris hookeriana is a plant species in the genus Iris, it is also in the subgenus Iris and in the section Pseudoregelia. It is a rhizomatous perennial, from the Himalayan mountains of India and Pakistan. It has long pale green or yellow green leaves, long slender stem and fragrant blue, purple or lilac flowers, that are mottled with a darker colour. It is cultivated as an ornamental plant in temperate regions.
Allium is a genus of monocotyledonous flowering plants with hundreds of species, including the cultivated onion, garlic, scallion, shallot, leek, and chives. The generic name Allium is the Latin word for garlic, and the type species for the genus is Allium sativum which means "cultivated garlic".
