Darbyshire, I. & Harris, T. (2006) Notes on the Genus Rhinacanthus (Acanthaceae) in Africa with a Synopsis of the R. nasutus- R. gracilis Complex and a Key to the African Members of the Genus Kew Bulletin 61(3) 401-418
| Species | FZ divisions | Content |
| xerophilus A. Meeuse | S | |
| zambesiacus I. Darbysh. | N,W,C,E,S | Description, Image |