Herb of the lily family is a term used to describe two edible plants, Scilla and LEEK. Scilla is a genus of flowering plants in the Asparagaceae family, commonly known as squill. It is native to the Mediterranean region and has six letters. LEEK is a vegetable that belongs to the Allium genus and is closely related to onion, garlic, and chives. It is native to the eastern Mediterranean and has four letters.