Heiduk, A. (2023) “Ceropegia cryptobarbata sect. Chamaesiphon (Apocynaceae—Asclepiadoideae), a novel tuberous species from the Drakensberg foothills in South Africa”, Phytotaxa. Auckland, New Zealand, 613(2), pp. 162–170. doi: 10.11646/phytotaxa.613.2.5.