Ceropegia khalidbinsultanii A Alharbi S00 (H. asirensis) B Alharbi S10b (H. asirensis) C Alharbi S4a (H. asirensis) D Collenette 5944, Jabal Radhwa, (H. radhwana, Type) E Alharbi S16a (H. asirensis) F Collenette 1309, Al-Baha, (H. asirensis, Type) G Collenette 5970, Jabal Anagyan (H. anagaynensis, Type) H ex Tom McCoy KSA129 sub DP8384, 25 km SW of Khamis Mushayt, (H. khalidbinsultanii, Type) I follicles, Alharbi S14a. (A–C, E, I) photo by the first author from Wadi Thee Gazal, Ash Shafa; (D, F, G) reproduced from Plowes (2012)); (H) received from D. Plowes in 2011.