1. Al-Shehbaz, I. A., 1986a: New wool-alienCruciferae (Brassicaceae) in North America:Lepidium andSisymbrium. ? Rhodora88: 347?356.
2. ?, 1986b: The genera ofLepidieae (Cruciferae; Brassicaceae) in the southeastern United States. ? J. Arnold Arbor.67: 265?311.
3. Barlow, B. A., 1981: The Australian flora: its origin and evolution. ? InGeorge, A. S., (Ed.): Flora of Australia1, pp. 25?75. ? Canberra: Austral. Govt. Publ. Service.
4. Beadle, N. C. W., 1981: Origins of the Australian angiosperm flora. ? InKeast, A., (Ed.): Ecological biogeography of Australia, pp. 408?426. ? The Hague: Junk.
5. Balgooy, M. M. J. van, 1971: Plant geography of the Pacific. ? Blumea Supplement6.