The genus Coleus (Lamiaceae) in Central Africa (Democratic Republic of the Congo, Rwanda, Burundi), with the description of 15 new species Author Meerts, Pierre J. 0000-0003-4215-027X Meise Botanic Garden, Nieuwelaan 38, BE- 1860 Meise, Belgium & Université Libre de Bruxelles, Av. F. D. Roosevelt 50 CP 244, BE- 1050 Brussels, Belgium & Fédération Wallonie-Bruxelles, Service général de l’Enseignement supérieur et de la Recherche scientifique, Brussels, Belgium Author Paton, Alan J. 0000-0002-6052-6675 The Herbarium, Royal Botanic Gardens, Kew, Richmond TW 9 3 AB, UK text PhytoKeys 2024 2024-09-02 246 71 178 journal article 302074 10.3897/phytokeys.246.129476 b381880a-e0bb-4b02-ad0f-2f90a0b6c995 Coleus decurrens Gürke , Bot. Jahrb. Syst. 19: 215. 1894 . = Coleus variifolius De Wild. , Bol. Soc. Ibér. Ci. Nat. 19: 124. 1920 . Type: DR. Congo , between Buta and Bima, 15 Oct 1905 , F. Seret 96 ( lectotype BR [ BR 0000021453991 ], designated by Paton et al. 2009 ). Type. Cameroon , Buea, 1891, P. Preuss 948 ( holotype B destroyed; isotype COI [ COI 00005778], HBG ). Description. Paton et al. (2009: 294) as Plectranthus decurrens (Gürke) J. K. Morton, Paton (2022: 46) as Coleus decurrens Gürke. Distribution. Nigeria to Uganda , Gabon , Republic of Congo , DR. Congo , Angola . Habitat and ecology. Rainforest, often seasonally flooded, riparian forest, river banks; 470–2000 m elev. Additional specimens. DR. Congo , Bas-Congo , Without locality, 1904, J. Gillet s. n ., & J. Gillet 3783 ( BR ); Kasaï , Panzi, galerie de la Makita, 18 Feb 1952 , H . Callens 3438 ( BR ); Forestier central , Avakubi, 9 Jan 1914 , J. Bequaert 1853 ( BR ); Bongo, 26 Jul 1955 , C . Evrard 1512 ( BR ); Parc national de la Maïko, 45 km N of Lubutu, 2 Jun 1977 , J. Lejoly 1905 C ( BR , BRLU ); Yangambi, 7 km NW, 8 May 1936 , J. Louis 1834 ( BR ); Bolanda, 29 Oct 1913 , Nannan 85 ( BR ); Entre Buta et Banalia, Ambelati, 11 Jan 1926 , W . Robyns 1333 ( BR ); Ubangi-Uele , entre Libenge et Géména, Dec 1930 , J. Lebrun 1866 ( BR ); Lac Albert , Kilo, 28 Jun 1914 , J. Bequaert 4866 ( BR ); Lacs Edouard et Kivu , Route Kibabi-Kikoma, km 50, 29 Apr 1958 , R . Pierlot 1943 ( BR ); Route Kavumu-Walikale, km 107, Irangi, 24 Oct 1959 , G . Troupin 10926 ( BR ); Kidedeya, près riv. Lusilube, 13 Sep 1955 , Vanschuytbroeck in de Witte 12687 ( BR ). Note. Two specimens ( J. Bequaert 6460; A. Leonard 3939 ) are dwarf plants (< 20 cm ), with small leaves and blade not long attenuated at base; they are either a juvenile form or a different taxon; more materials are needed.