It was once classified in the lily family, like the related Allium species, onions and garlic, but the Liliaceae have been split and the onion-like plants are now in the family Amaryllidaceae and asparagus in the Asparagaceae. Asparagus officinalis is native to most of Europe, northern Africa and western Asia, and is widely cultivated as a vegetable crop. (source)
So can rabbits eat Asparagus ends?
Yes they can eat them as long as they are eaten raw. Don’t give them too many though as they are quite acidic.