Ornithogalum (Greek, bird and milk; application not obvious). Liliaceae. This genus includes the star of Bethlehem, a dwarf hardy bulbous plant that bears umbels of green-and-white flowers in May and June; also many other outdoor and indoor bulbs. | Ornithogalum (Greek, bird and milk; application not obvious). Liliaceae. This genus includes the star of Bethlehem, a dwarf hardy bulbous plant that bears umbels of green-and-white flowers in May and June; also many other outdoor and indoor bulbs. |