For Allium
Mathew, B. 1996. A review of Allium sect. Allium. Royal Botanic Gardens, Kew, England.
McNeal, D.W., Jr., and T.D. Jacobsen. 2002. Allium. In Flora of North America Editorial Committee. 2002a. Flora of North America north of Mexico. Volume 26, Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York, NY. 723 pp.
Poindexter, D.B., A.S. Weakley, and P.J. Williams. 2017. A new and narrowly endemic onion in the Brushy Mountains of North Carolina. In Weakley, A.S., D.B. Poindexter, R.J. LeBlond, B.A. Sorrie, C.H. Karlsson, P.J. Williams, E.L. Bridges, S.L. Orzell, B.R. Keener, A. Weeks, R.D. Noyes, M. Flores-Cruz, J.T. Diggs, G.D. Gann, and A.J. Floden. 2017. New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. II. J. Bot. Res. Inst. Texas 11: 291-325.
Rahn In Kubitzki, K., ed. 1998a. The families and genera of vascular plants. III. Flowering plants – Monocotyledons – Lilianae (except Orchidaceae). Springer, Berlin. 478 pp.