This biennial plant's scientific name is Allium cepa, and it is a member of the lily family.  
This biennial plant's scientific name is Allium cepa, and it is a member of the lily family.  It has been claimed to cure colds, laryngitis, earaches, and other maladies, though none of these claims have been medically substantiated. Probably native to southwestern Asia, it is now grown the world over, and it is a close relative to garlic. For ten points, identify this common plant that will often make your eyes water when cutting it.
This biennial plant's scientific name is Allium cepa, and it is a member of the lily family.  
Onion