Bester, S.P., Nicholas, A. and Ramdhani, S. 2017.

An amplified description for the elusive Cordylogyne argillicola (Apocynaceae—Asclepiadoideae) from Namibia

. Phytotaxa. 321, 1 (Sep. 2017), 114–124. DOI:https://doi.org/10.11646/phytotaxa.321.1.5.