At first I thought this plant would be an onion or some type of allium, but there is no scent to the leaves or plant at all. I thought perhaps an ornithagalum, but the base of the stem doesn't form a bulb, but instead grows out like a spider plant, losing lower leaves as it grows. I am stumped. A customer brought it in to me for an ID. She has grown it as a housplant for years and there are about 20-30 of these stems growing in one pot. She has never seen it flower.