Heiduk, Annemarie. “Ceropegia cryptobarbata Sect. Chamaesiphon (Apocynaceae—Asclepiadoideae), a Novel Tuberous Species from the Drakensberg Foothills in South Africa”. Phytotaxa 613, no. 2 (September 13, 2023): 162–170. Accessed February 5, 2026. https://phytotaxa.mapress.com/pt/article/view/phytotaxa.613.2.5.