onion food product vegetable-producing plant, root, tuber or bulb onion plant PLANTS:ALLIU Allium sp. Allium Allium L. The onion (*Allium cepa *L), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus *Allium*. Its close relatives include the garlic, shallot, leek, chive,[2] and Chinese onion. This genus also contains several other species variously referred to as onions and cultivated for food, such as the Japanese bunching onion (*Allium fistulosum*), the tree onion (*A. ×proliferum*), and the Canada onion (*Allium canadense*). The name "wild onion" is applied to a number of *Allium* species, but *A. cepa* is exclusively known from cultivation. [https://en.wikipedia.org/wiki/Onion] allium spp. bulb onion cebolla garden onion allium species requires discussion