Eukaryota | Plantae | Pteridobiotina | Tracheophyta | Magnoliopsida | Gentianales | Apocynaceae | Apocynoideae | Echiteae | Prestoniinae | Prestonia
COL:CS5HF | COL:P | COL:CMQ8S | COL:TP | COL:MG | COL:39D | COL:6L2 | COL:J5Y | COL:KV7PX | COL:KVQJH | COL:6VLF
(Chatton, 1925) Whittaker & Margulis, 1978 |  | Britton & Brown |  |  | Juss. ex Bercht. & J.Presl | Juss. | Burnett | Bartl. | Pichon ex M.E.Endress | R.Br.