Ceropegia lodarensis var. lodarensis A ex J Lavranos 1789, sub DP3604, Yemen, (H. lodarensis, Type) B Alharbi S6B (H. collenetteae) C Alharbi S9B (H. collenetteae) D ex Collenette 549 sub DP6865, Jabal Al Sawdah, (H. saudi-arabica, Type) E Alharbi S2B (H. collenetteae) F Alharbi S18a (H. collenetteae) G Collenette 2227, Al-Hadda, (H. collenetteae) H ex Collenette 8232 sub DP8126, (H. saudi-arabica) I Alharbi S4B (H. collenetteae) J ex Collenette 1176 sub DP6868, Jabal Al Sawdah, (H. collenetteae, Type) K maroon uniform colour of corolla tube in ex Collenette sub DP6594, Abha, (H. saudi-arabica) L concentric broken maroon lines of corolla tube in Alharbi S6B (H. collenetteae). (A) reproduced from Plowes (2014); (D, G, H, J, K) reproduced from Plowes (2012); (B, C, E, F, I, L) photo by the first author from Wadi Thee Gazal, Ash Shafa.