BioStor
 | The moths of South Africa (pt. II) (1902) Annals of The South African Museum 2: 255-446 |
 | The genera of Anchonieae (Hesperideae) (Cruciferae; Brassicaceae) in the southeastern United States Ihsan Al-Shehbaz (1988) Journal of the Arnold Arboretum 69: 193-212 |