A monograph of the genus Polhillia (Genisteae: Fabaceae) Author du Preez, B. Author Dreyer, L. L. Author Stirton, C. H. Author Muasya, A. M. text South African Journal of Botany 2021 2021-05-31 138 156 183 http://dx.doi.org/10.1016/j.sajb.2020.12.022 journal article 10.1016/j.sajb.2020.12.022 1727-9321 10496862 1. Polhillia involucrata (Thunb.) B.-E.van Wyk & A.L.Schutte. 4.5.3. Etymology The subgeneric epithet Roseopolhillia was chosen to highlight the distinct and diagnostic rose pink coloured flowers unique to Polhillia species. 4.5.4. Diagnostic characters The single species in Polhillia subgen. Roseopolhillia is distinguished from the 10 species in Polhillia subgen. Polhillia by having pink or rarely white flowers ( versus flowers yellow); fruit dehiscent ( versus fruit indehiscent); leaves mostly glabrous and stipules villous only on adaxial surface and glabrous on abaxial surface ( versus leaves and stipules entirely sericeous-canescent or villous). 4.5.5. Distribution This subgenus (species) is distributed through high altitude inland Renosterveld of the Roggeveld Escarpment and Touwsriver areas ( Fig. 7 ). All known populations occur at elevations between 1000 — 1420 m . a.s.l. This subgenus is for the most part endemic to the Extra Cape Subregion (ECR) of the GCFR sensu Snijman (2013) , but just reaches into the CCR sensu Manning and Goldblatt (2012) south of Touwsriver.