TL;DR: While writing up the genus for the Flora of Tropical East Africa I examined material from throughout the range of the genus and came to the conclusion that this was broadly correct but that subspecies could be recognized as follows.
Abstract: Cremaspora was described by Bentham in 1849 (Hook., Niger Fl.: 412) but the number of species has always been in some doubt. Bentham based his genus on a plant from Sierra Leone described by G. Don under Coffea and also associated with it material collected by Hilsenberg and Bojer on Zanzibar I. Later it was found that Thonning's Psychotria triflora described in 1827 supplied the earliest epithet for the species but the necessary combination was not made until 1891. The tendency has always been to consider the genus to consist of one very variable species widely distributed in tropical Africa and one rare species C. thomsonii Hiern restricted to parts of Nigeria and Cameroun i.e. following the lead of Hiern (Fl. Trop. Afr. 3: 126 (1877)). Whilst writing up the genus for the Flora of Tropical East Africa I examined material from throughout the range of the genus and came to the conclusion that this was broadly correct but that subspecies could be recognized as follows.
TL;DR: The tribe Alberteae of Rubiaceae consists of genera like Cremaspora Benth.
Abstract: The tribe Alberteae of Rubiaceae consists of genera like Cremaspora Benth, Polysphaeria Hook, f, Belonophora Hook, f, Aulacocalyx Hook, f,Rhabdostigma Hook, f, Alberta E Mey, Nematostylis Hook f and Octotropis Bedd All the above mentioned genera are natives of Africa and Madagascar except Octotropis Bedd which is a monotypic Indian genus, described from Travancore Hills A new genus, Pubistylus Thoth from the Andaman Islands is now added to this tribe It is interesting to point out that there is no representative genus of this tribe in Malaysia whose flora has greatly influenced the Andaman and Nicobar Islands