For Draba
Al-Shehbaz, I.A. 1987. The genera of Alysseae (Cruciferae; Brassicaceae) in the southeastern United States. J. Arnold Arb. 68: 185-240.
Al-Shehbaz, I.A. 2012a. A generic and tribal synopsis of the Brassicaceae (Cruciferae). Taxon 61: 931-954.
Al-Shehbaz, I.A., M.D. Windham, and R. Elven. 2010. Draba. In Flora of North America Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7, Magnoliophyta: Brassicaceae to Salicaceae. Oxford Univ. Press, New York, NY. 797 pp.
Jordon-Thaden, I., I. Hase, I.A. Al-Shehbaz, and M.A. Koch. 2010. Molecular phylogeny and systematics of the genus Draba s.l. (Brassicaceae) and identification of its closest related genera. Molec. Phylogen. Evol. 55: 524-540.
Koch, M., and I.A. Al-Shehbaz. 2002. Molecular data indicate complex intra- and intercontinental differentiation of American Draba (Brassicaceae). Ann. Missouri Bot. Gard. 89: 88-109.
Rollins, R.C. 1993. The Cruciferae of continental North America: systematics of the mustard family from the Arctic to Panama. Stanford Univ. Press, Stanford, CA. 976 pp.
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