allio

Allio refers to a genus of flowering plants in the Amaryllidaceae family, commonly known as onions, garlic, and chives. This genus is characterized by its bulbous perennial growth habit and the production of aromatic compounds, primarily sulfur-containing substances, which give these plants their distinctive pungent smell and flavor. Allium species are native to temperate regions of the Northern Hemisphere, though they have been widely cultivated and naturalized across the globe.

The genus Allium encompasses a diverse range of species, many of which are economically important as food crops. Common examples include *Allium cepa* (onion), *Allium sativum* (garlic), *Allium schoenoprasum* (chives), and *Allium fistulosum* (scallions or Welsh onions). These plants typically feature long, strap-like leaves and produce flowers in an umbel at the end of a leafless stalk, often referred to as a scape. The bulbs, cloves, or leafy greens of these species are used extensively in cuisines worldwide for seasoning and as a primary ingredient. Beyond their culinary uses, some Allium species have also been traditionally employed for medicinal purposes.