Coleus gracillimus (T. C. E. Fr.) Robyns & Lebrun, Ann. Soc. Sci. Bruxelles, Sér. B 49: 106. 1929

≡ Englerastrum gracillimum T. C. E. Fr., Notizbl. Bot. Gart. Berlin-Dahlem 9: 69. 1924. Type: DR. Congo, Mt Corva, 15 May 1895, G. Descamps s. n. (holotype B destroyed; isotype UPS [V- 712081], K fragment).

≡ Plectranthus gracillimus (T. C. E. Fr.) Hutch. & Dandy, Bull. Misc. Inform. Kew 1926: 481. 1926.

Description.

Paton et al. (2009: 290), Paton et al. (2013: 238), as Plectranthus gracillimus (T. C. E. Fr.) Hutch. & Dandy.

Distribution.

Widespread in Tropical Africa.

Habitat and ecology.

Miombo woodland, savannah, rocks, occasionally on copper-rich soil and on saline soil, 300–1575 m elev.

Additional specimens.

DR. Congo, Bas-Congo, Kimbidi, 21 Apr 1959, L. Pauwels 2571 (BR); Kibotuka, 2 Sep 1975, L. Pauwels 5429 (BR, WAG); Kasaï, Mayala, 20 Apr 1953, H. Callens 1536 B (BR); Kwango-Mela, 20 Mar 1955, R. Devred 1680 (BR); Kwango, entre Dinga et Mpandi, 5 May 1944, R. Germain 2238 (BR); Bas-Katanga, 30 km S Kamina, 4 Jul 1948, P. Duvigneaud 1126 Co 1 (BRLU); Route Kayembe-Mukulu-Kamina, 9 May 1959, S. Risopoulos 1071 (BR); N de Mabwe, 2 May 1949, L. van Meel in G. F. de Witte 6279 (BR); Lacs Edouard et Kivu, Ubwari Peninsula, 8 Oct 1979, Y. & T. Ankei 79 / 0128 (BR); Haut-Katanga, Kisenge, colline de Kapolo, 1956, P. Duvigneaud & J. Timperman 2341 (BRLU); Upemba, Ganza, 30 May 1949, L. van Meel in G. F. de Witte 6457 (BR); Tenke, colline Pumpi, 26 May 2007, I. Parmentier & E. Kisimba 4606 (BR); Mont Mukuen, 6 Jun 1947, A. Schmitz 698 (BR).

Burundi, Bururi, Rumonge, 5 Jun 1966, J. Lewalle 892 (BR); Kininya Mosso, 28 Jun 1952, G. Michel 3104 (BR).

Note.

New species record for Burundi.