Placed in the Liliaceae in Michigan Flora. The garden hyacinth (Hyacinthus orientalis L.) has been collected persisting where dumped with garden refuse in Alpena Co., but is not really established. Additional species of Muscari and Scilla are cultivated and may escape.
1. Tepals united for half or more of their length; perianth blue or purple, less than 6 mm long.
1. Tepals completely separate or united at base only; perianth white or blue, but more than 6 mm long.
2. Tepals white, with green median stripe on outer side; filaments broad and flat (winged), wider at the middle than the anthers; flowers (3–) 5–20, in a raceme or corymb.
2. Tepals white to blue, without green stripe; filaments slender or somewhat flattened toward base only; flowers various.
3. Flowers flowers usually more than 20, in an elongate raceme, white or pale blue; leaves 4–10.
3. Flowers 1–15 on a stem (more than one stem may be formed per plant), usually deep blue, or at least with a clear blue central vein; leaves usually 2–4.
4. Perianth segments blue, (rarely white), with the midvein only slightly darker, somehat spreading (and flowers then nodding) to widely spreading, the flowers then ± flat; anther filaments not united.
4. Perianth segments pale, almost white, but with a broad blue zone centered on the midvein, not spreading, the flowers ± tubular; anther filaments united into a corona.