Plectranthus alboviolaceus Guerke, Bot. Jahrb. Syst. 30: 397. 1901

Plectranthus alboviolaceus Gürke, Bot. Jahrb. Syst. 30: 397. 1901. Type: Tanzania, Rungwe District: Kalengalenga Mts, Goetze 1140 (isotype: E).

Plectranthus rhomboideus Gürke, Bot. Jahrb. Syst. 36: 135. 1905. Type: Tanzania, Kilimanjaro, Engler 1775 (holotype: B, destroyed).

Distribution.

Ethiopia to S. Trop. Africa.