Coleus rhodesianus (N. E. Br.) A. J. Paton

Meerts, Pierre J. & Paton, Alan J., 2024, The genus Coleus (Lamiaceae) in Central Africa (Democratic Republic of the Congo, Rwanda, Burundi), with the description of 15 new species, PhytoKeys 246, pp. 71-178 : 71-178

Coleus rhodesianus (N. E. Br.) A. J. Paton , Phytokeys 129: 88. 2019 (“ rhodesianum ”).

≡ Englerastrum rhodesianum N. E. Br. , Bull. Misc. Inform. Kew 1922: 31. 1922. Type: Zambia, Mumbwai, M. A. Macaulay 637 (syntype K), & Zambia, Livingstone, F. A. Rogers 7205 (syntype, not seen).

= Englerastrum schweinfurthii Briq. , Bot. Jahrb. Syst. 19: 178. 1894, non Coleus schweinfurthii Vatke. Type: South Sudan (“ Ghasallquellengebiet, Lande der Bongo ”), Addai, 19 Oct 1869, G. Schweinfurth 2532 ( K, P, PRE, W).

= Plectranthus djalonensis (A. Chev.) A. J. Paton , Fl. Trop. E. Afr., Lamiac.: 286. 2009. Type: Guinea, sur les plateau ferrugineux arides entre Timbo et Kouria, Sept 1907, A. Chevalier s. n. (holotype P [P 00466389]; isotype K).

Description.

Paton et al. (2009: 286), Paton et al. (2013: 236), as Plectranthus djalonensis (A. Chev.) A. J. Paton.

Distribution.

Tropical Africa to Caprivi Strip.

Habitat and ecology.

River-bank, ruderal, open vegetation on wet soil, savannah, palm oil plantation, mostly on wet soil; forests, rarely on copper rich soil; very broad ecological amplitude in terms of light and soil moisture; 100–1750 m elev.

Additional specimens.

DR. Congo, Mayombe, Lukula, 1 Sep 1913, J. Bequaert 671 ( BR); Luki, 3 Apr 1947, R. Devred 3363 ( BR, POZG); Bas-Congo, Kisantu, 4 Mar 1959, L. Pauwels 2005 ( BR, WAG); Dolo [Ndolo], Jun 1899, R. Schlechter 12490 ( AMD, BM, BR, E, G, L, P); Kasaï, Lusambo, 15 Mar 1939, P. Casier 54 & 56 ( BR); Suka, Jul 1975, M. Dujardin 401 ( BR); Bas-Katanga, Mwene-Ditu, Kele, 13 May 1957, L. Liben 2946 ( BR); Gandajika, 18 Mar 1954, S. Risopoulos 196 ( BR); Forestier Central, Yangambi, Ile Tukutu, 10 Jul 1963, D. Bolema 1178 ( BR); Kisangani, Ile Kongolo, 3 Mar 1978, J. Lejoly 2747 ( BR, BRLU, K, WAG); Yoambole, entre Lileko et Basoko, 28 Sep 1938, J. Louis 11437 ( BR); Bikoro, Gombe, 20 May 1959, L. Toka 79 ( BR, WAG); Ubangi-Uele, Doruma, Oct 1936, A. M. De Graer 754 ( BR, K, WAG); Camp Garamba, 10 Oct 1955, M. Micha 296 ( BR, WAG); Lacs Edouard et Kivu, Ruzizi, May 1967, J. Loumaye s. n. ( BR); Haut-Katanga, Upemba, riv. Manda, 20 Apr 1948, G. F. de Witte 3736 ( BR); Entre Mulubi et Kashika, 29 Apr 1926, J. Lebrun 2119 ( BR); Kwatebala, 24 Apr 2006, F. Malaisse, E. Kisimba, L. Saad 21 ( BR).

Rwanda, Route Nyamasheke-Kibuye, km 19, 29 Mar 1972, G. Bouxin 1527 ( BR); Mushao, May 1929, H. Humbert 8460 ( BR); Rwinkwavu, Plaine de Matinza, 21 May 1969, G. Bouxin & M. Radoux 450 ( BR).

Burundi, Aérodrome de Bujumbura, 16 Mar 1967, J. Lewalle 1680 ( BR, MO); Kabuyekere, 5 Jun 1980, M. Reekmans 9282 ( BR, MO, US); Kigwena, 13 May 1982, M. Reekmans 11199 ( BR, MO, WAG).