New combinations in Stenostelma (Apocynaceae-Asclepiadoideae) and two novel species from South Africa Author Bester, Stoffel P. National Herbarium, South African National Biodiversity Institute, Private Bag X 101, 0001 Pretoria, South Africa. & School of Life Sciences, University of KwaZulu-Natal, Private Bag X 54001, Durban, 4000 South Africa. Author Nicholas, Ashley School of Life Sciences, University of KwaZulu-Natal, Private Bag X 54001, Durban, 4000 South Africa. text Phytotaxa 2018 2018-07-18 361 1 41 55 http://dx.doi.org/10.11646/phytotaxa.361.1.3 journal article 10.11646/phytotaxa.361.1.3 1179-3163 Stenostelma Schlechter (1894b: 6) . Type : Stenostelma capense Schlechter (1894b: 6) . Krebsia Harvey (1868: 233) (nom. illeg.), non Ecklon & Zeyher (1836: 179) . Type : Krebsia stenoglossa ( Schlechter 1895a: 270 ) , Schlechter (1895b: 40) .