| Author | Title | Journal/publisher | Literature ref. no. |
| Darbyshire, I., Manzitto-Tripp, E.A. & Chase, F.M. (2021) | A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 2 | Kew Bulletin 76 127-190 | 1698 |
Note that the process of capturing references from species to the literature and the reverse may be incomplete.