| The tribes of Cruciferae (Brassicaceae) in the southeastern United States Ihsan Al-Shehbaz (1984) Journal of the Arnold Arboretum 65: 343-373 | |
| The genera of Lepidieae (Cruciferae; Brassicaceae) in the southeastern United States Ihsan Al-Shehbaz (1986) Journal of the Arnold Arboretum 67: 265-311 |