Allium cernuum Roth. Nodding Onion. Phen: Jun-early Aug; Aug-Oct. Hab: Generally in open woodlands or around outcrops of shale, mafic, ultramafic, or calcareous rocks, in the mountains at low elevations. Dist: NY, MI, MN, and BC, south to GA and AZ; the distribution is oddly fragmented into largely Rocky Mountain, Ozarkian, and Appalachian segments, and it is quite possible that cryptic taxa are involved.
Origin/Endemic status: Native
Syn: = K3, K4, S, Va; < Allium cernuum – C, F, FNA26, G, Il, Mi, Mo1, NY, Pa, RAB, Tx, W; > Allium cernuum var. cernuum – K1