References
For Hemerocallis
Clifford, H.T., R.J.F. Henderson, and J.G. Conran. 1998. Hemerocallidaceae. Pp. 245-253. In Kubitzki, K., ed. 1998a. The families and genera of vascular plants. III. Flowering plants – Monocotyledons – Lilianae (except Orchidaceae). Springer, Berlin. 478 pp. Google Scholar
Straley, G.B., and F.H. Utech. 2002c. Hemereocallis. 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. Google Scholar
Zomlefer, W.B. 1998. The genera of Hemerocallidaceae in the southeastern United States. Harvard Papers in Botany 3: 113-145. Google Scholar