The above description, adapted from that of Urban, shows a number of unique features. This is the only Streptopetalum with the filament-adnation less than 2 mm. long, as it is in Wormskioldia, and this measurement is therefore suspect. Heterostyly is suspected (“Flores dimorphi?” Urban), heterophylly not observed and the plant is reported as an annual. The suspicion arises that this represents a perennial species in its first year, and that it is in fact a narrow-leaved variant of a species, the more common examples of which have been described more recently under the name S. wittei Staner in De Wild. & Staner, Contrib. Fl. Katanga, Suppl. 4: 68 (1932). Types: Belgian Congo, Kiambi, de Witte 237 and Luxen 26 and 50 (all B, syn.!, all K, photo.!) a species of the Belgian Congo and N. Rhodesia. Re-collection of S. graminifolium (in Tanganyika) is required to confirm or deny this hypothesis, in connection with which the occurrence of similarly very narrow-leaved variants of W. longepedunculata is worthy.