Allium anceps
Twinleaf Onion; Kellogg's Onion

Illustration by Melissa Marshall. Reprinted with permission from Intermountain Flora: Vascular plants of the Intermountain West, U.S.A., by A. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal, and P. K. Holmgren, Vol. 6, p. 520, copyright 1977, The New York Botanical Garden.