Coleus shirensis Gürke

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 shirensis Gürke , Bot. Jahrb. Syst. 19: 216. 1894.

≡ Plectranthus shirensis (Gürke) A. J. Paton , SABONET Rep. Ser. 31: 189. 2005. Type: Malawi, 1891, J. Buchanan 376 (lectotype K [ K 000070492 ]; isolectotype E [ E 00193509], designated by Mathew [1976]).

Description.

Paton et al. (2009: 336), Paton et al. (2013: 272), as Plectranthus shirensis (Gürke) A. J. Paton.

Distribution.

SW & S Tanzania to S Tropical Africa.

Habitat and еcology.

Riparian forest, swamp savannah, forest margins; 1000–1800 m elev.

Additional specimens.

DR. Congo, Bas-Congo, Kinkosi, 26 Feb 1959, L. Pauwels 1600 (BR); Kasaï, Entre Kwango-Lufuna, 4 Aug 1944, R. Germain 2643 (BR); Kwango, 21 Jul 1955, R. Devred 2290 (BR); Bas-Katanga, Gandajika, 20 Jun 1951, Chalon 326 (BR); Kindele, Sep 1951, R. Desenfans 2013 (BR, BRLU); 10 km SW Gandajika, 9 Aug 1945, F. Luxen 534 (BR); Lovoi, Kamina, Mar 1932, P. Quarré 2929 (BR); Haut-Katanga, Mulumbi, riv. Dona, 30 Aug 1953, R. Desenfans 3731 ( BRLU); 14 km N de Mitwaba, 16 Jan 1960, P. Duvigneaud 5077 Co ( BRLU); Kundelungu, 6 km NNW poste Katshupa, 29 Jul 1966, F. Malaisse 4213 a (BR; LSHI); Kisanga, Aug 1933, P. Quarré 3466 (BR); Upemba, Lusinga, route de Mitwaba, 14 Sep 1948, W. Robyns 3590 (BR); Keyberg, 24 Jun 1947, A. Schmitz 732 (BR).

Note.

At the northern limit of the distribution range, some specimens are unusual in lacking long hairs on pedicel and calyx (Herman 2308, M. Schaijes 1885, P. Quarré 2929).