| Author | Title | Journal/publisher | Literature ref. no. |
| Darbyshire, I., Tripp, E.A. & Chase, F.M. (2019) | A taxonomic revision of Acanthaceae tribe Barlerieae in Angola and Namibia. Part 1 | Kew Bulletin 74(5) 1-85 | 1699 |
Note that the process of capturing references from species to the literature and the reverse may be incomplete.