Allium drummondii, also known as Drummond's onion, wild garlic and prairie onion, is a North American species of onion native to the southern Great Plains of North America. It is found in South Dakota, Kansas, Nebraska, Colorado, Oklahoma, Arkansas, Texas, New Mexico, and northeastern Mexico.
Allium przewalskianum is an Asian species of wild onion in the Amaryllis family.
Allium atrosanguineum 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 chrysocephalum is a plant species native to China, in the provinces Gansu, Qinghai, and Sichuan. It grows at elevations of 3400–4800 m.
Allium fetisowii is a plant species native to Kazakhstan, Uzbekistan, Xinjiang, Kyrgyzstan and Tajikistan in Central Asia.
Allium flavovirens is a species of onions endemic to the western part of Inner Mongolia. It grows in dry places at altitudes of 1800–3100 m.
Allium hymenorhizum is a Eurasian species of wild onions 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 ledebourianum is an Asian species of wild onion native to central and northeastern Asia: Kazakhstan, Mongolia, Russia, and China. It occurs at elevations up to 1800 m elevation.
Allium maximowiczii, English common name oriental chive, is an Asian plant species native to Siberia, the Russian Far East, Mongolia, Japan, Korea and northeastern China.
Allium polyrhizum is an Asian species of wild onion widespread across Zabaykalsky Krai, Kazakhstan, Mongolia, and China at elevations 1000–3700 m.
Allium schoenoprasoides is an Asian species of wild onion native to Xinjiang, Kazakhstan, Kyrgyzstan and Tajikistan. It can be found at elevations of 2700–3000 m.
Allium semenovii is an Asian species of wild onion native to Xinjiang, Kazakhstan, Tajikistan, and Kyrgyzstan. It grows at elevations of 2000–3000 m.
Allium sikkimense is a plant species native to Sikkim, Tibet, Bhutan, Nepal, India and parts of China. It grows in meadows and on the edges of forests at elevations of 2400–5000 m. The species is cultivated as an ornamental in other regions because of its strikingly beautiful blue flowers. It is used medicinally in the Sikkim Eastern Himalayas.
Allium tanguticum is a Chinese species of wild onion native to Gansu, Qinghai and Tibet. It grows at elevations of about 2000–3500 m.
Allium tenuissimum is an Asian species of wild onion native to Mongolia, Asiatic Russia, Korea, Kazakhstan and China.
Allium filidens is a species of onion found at high elevations of central and south-central Asia. It is a bulb-forming perennial up to 45 cm tall, forming a hemispherical umbel of flowers; tepals white or pink with a purple midvein.
Allium akaka is a species of onion native to Iran.
The precise taxonomy of the genus Allium is still poorly understood with incorrect descriptions being widespread. With over 850 species distributed over the Northern hemisphere Allium is the sole genus in the Allieae, one of four tribes of subfamily Allioideae (Amaryllidaceae). New species continue to be described and Allium is both highly variable and one of the largest monocotyledonous genera, but the precise taxonomy of Allium is poorly understood, with incorrect descriptions being widespread. The difficulties arise from the fact that the genus displays considerable polymorphism and has adapted to a wide variety of habitats. Furthermore, traditional classications had been based on homoplasious characteristics. However, the genus has been shown to be monophyletic, containing three major clades, although some proposed subgenera are not. Some progress is being made using molecular phylogenetic methods, and the internal transcribed spacer (ITS) region, including the 5.8S rDNA and the two spacers ITS1 and ITS2, is one of the more commonly used markers in the study of the differentiation of the Allium species.
