Coleus erici-rosenii (R. E. Fr.) A. J. Paton, Phytokeys 129: 44. 2019.

≡ Pycnostachys erici-rosenii R. E. Fr., Wiss. Erg. Schwed. Rhod. - Kongo Exped. 1: 281. 1916. Type: DR. Congo, Niragongo, 2000 m elev., 21 Dec 1911. R. E. Fries 1588 (holotype UPS [V- 039931], isotype K [K 000405955], MO).

= Pycnostachys albidoviolacea De Wild., Pl. Bequaert. 4: 400. 1928. Type: DR. Congo, Kivu, Mukule, 26 Sep 1914, J. Bequaert 5889 (lectotype BR [BR 0000008910011], designated by Paton et al. [2009], isolectotype MO).

= Pycnostachys robynsii De Wild., Pl. Bequaert. 4: 398. 1928. Type: BURUNDI, Busiga, 28 May 1926, W. Robyns 2356 (holotype BR [BR 0000008910356], [BR 0000008909695]; isotype K, MO, P).

Description.

Paton et al. (2009: 408), as Pycnostachys erici-rosenii R. E. Fr.

Distribution.

E DR. Congo to Uganda.

Habitat and ecology.

Marshland, steppe, savannah, wooded savannah, sclerophyllous mountain forest; 1600–2420 m elev.

Additional specimens.

DR. Congo, Lac Albert, Haut-Ituri, Kwandruma, 16 Jul 1937, J. Ghesquière 4731 (BR); Lacs Edouard et Kivu, Boswenda, 23 Oct 1914, J. Bequaert 6087 (BR, K fragment, MO); Kabare, Lwiro, 17 Aug 1953, A. Christiaensen 4 0 (BR, LSHI); Chaîne des Mitumba, Hangi-Kipesa, 19 Jan 1956, J. de Wilde 624 (BR); Bitashimua, 1 Aug 1934, G. F. de Witte 1725 (BR); Kibumba, route Rutshuru-Goma, 12 Dec 1944, R. Germain 2993 (BR, U); Kabare, Mulungu, 6 Nov 1958, A. Léonard 1896 (BR, K, WAG); Kalehe, Mont Kahuzi, 6 Jun 1970, J. Ntakiyimana 78 (BR).

Rwanda, Buturo, Ruhengeri, Jan 1933, A. Becquet 362 (BR, MO); Forêt de Nyungwe, env. Gisakura, 12 Jun 1971, G. Bouxin 993 (BR, WAG); Kabare, colline à l’W de Tshibati, 30 Dec 1969, Ern 15 (BR, LWI, MO); Nyarutembe, Maraba, 2 Jul 1971, M. Radoux 19 (BR); Rangiro, Kirambo, 6 May 1980, B. Runyinya 998 (BR); Mukura, Mont Huye, 17 Jul 1974, G. Troupin 15122 (BR).

Burundi, Muramvya, 9 Sep 1991, J. De Laet H 82 (BR); Kisozi, 15 Jul 1935, J. B. Lejeune 314 (BR); Bubanza, 12 Jun 1981, M. Reekmans 10653 (BR, WAG); Karuzi, 3 Apr 1958, D. van der Ben 2023 (BR).