Coleus tetragonus (Guerke) Robyns & Lebrun, Ann. Soc. Sci. Bruxelles, Ser . B 49: 106. 1929
Plectranthus tetragonus Gürke, Bot. Jahrb. Syst. 19: 209. 1894.
Englerastrum tetragonum ( Gürke) T.C.E.Fr., Notizbl. Bot. Gart. Berlin-Dahlem 9: 73. 1924. Type: Tanzania, Lushoto District: Usambara Mts, Mashewa (Mascheua), Holst 3573 (holotype: B, destroyed; isotype: K, W, Z).
Plectranthus melanocarpus Gürke, Bot. Jahrb. Syst. 19: 210. 1894.
Englerastrum melanocarpum ( Gürke) T.C.E.Fr., Notizbl. Bot. Gart. Berlin-Dahlem 9: 71. 1924.
Coleus melanocarpus ( Gürke) Robyns & Lebrun, Ann. Soc. Sci. Bruxelles, Sér . B 49: 106. 1929. Type: Tanzania, Masai steppe, Fischer 511 (holotype: B, destroyed; isotype: K, fragment).
Plectranthus biflorus Baker in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 5: 402. 1900.
Englerastrum biflorum (Baker) T.C.E.Fr., Notizbl. Bot. Gart. Berlin-Dahlem 9: 73. 1924. Type: Malawi, between Khondowe and Karonga, Whyte s.n. (holotype: K).
Plectranthus dekindtianus De Wild., Ann. Mus. Congo Belge, Bot., sér . 4, 2: 135. 1913. Type: DRC, Bugege, Hock s.n. (holotype: BR).
Distribution.
Kenya to South Africa.