Notes on the genus Rubus in southern Africa

The species Rubus ludwigii EckI, & Zeyh. is re-examined and a key is provided to the subspecies recognized, A new subspecies spatiosus C. H. Stirton is described. R. rigidus Sm. var. longepedicellatus C. E. Gust, is raised to specific rank, viz R. longepedicellatus (C. E. Gust.) C. H. Stirton.