References

For Paysonia

Al-Shehbaz, I.A. 1987. The genera of Alysseae (Cruciferae; Brassicaceae) in the southeastern United States. J. Arnold Arb. 68: 185-240. Google Scholar

O'Kane, S.L., and I.A. Al-Shehbaz. 2002. Paysonia, a new genus segregated from Lesquerella (Brassicaceae). Novon 12: 379-381. Google Scholar

O'Kane, S.L., Jr. 2010a. Paysonia. 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. Google Scholar

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. Google Scholar

Rollins, R.C., and E.A. Shaw. 1973. The genus Lesquerella (Cruciferae) in North America. Harvard Univ. Press, Cambridge. 288 pp. Google Scholar