Coleus stenostachys (Baker) A. J. Paton & Phillipson, Phytokeys 129: 100. 2019.

≡ Pycnostachys stenostachys Baker in D. Oliver & auct. suc. (eds.), Fl. Trop. Afr. 5: 380. 1900. Type: Uganda, Bunyoro District: sides of Nile, Nov 1862, J. A. Grant in J. H. Speke & J. A. Grant s. n. (holotype K [K 000405970]).

= Pycnostachys coerulea Hook . Exot. Fl. 3: t. 202. 1826, non Coleus coeruleus Gürke. Type: Madagascar, cultivated in Kew from seeds sent by W. Bojer & Helsinger (holotype K [K 000406006]; isotype M [M 0104752]).

= Pycnostachys brevipetiolata De Wild., Pl. Bequaert. 4: 394. 1928. Type: DR. Congo, Kivu, rivière Rutshuru, Kaitafu, 4 Oct 1914, J. Bequaert 5972 (holotype BR [BR 0000008910363], [BR 0000008909718]).

Description.

Paton et al. (2009: 393), Paton et al. (2013: 321), as Pycnostachys coerulea Hook.

Distribution.

Ethiopia to South Africa, Madagascar.

Habitat and еcology.

River banks, lake shores, Papyrus marshland and swamps, Pennisetum-Phragmites savannah on moist soil; 900–1900 m elev.

Additional specimens.

DR. Congo, Lac Albert, Nioka, 5 May 1952, L. Liben 245 (BR, K); Nioka, rivière Duda, 22 Oct 1947, A. Taton 666 (BR); Lacs Edouard et Kivu, Kaitafu, rivière Rutshuru, 4 Oct 1914, J. Bequaert 5972 (BR, K fragment); Lac Magera, 1 Mar 1934, G. F. de Witte 1416 (BR); Lushadu, bord du Lac Kivu, 10 Jun 1960, F. L. Hendrickx 7981 (BR, BRLU); Nyamunyunye, 22 Sep 1952, R. Pierlot 391 (BR); Lac Lukulu, 22 Jul 1953, D. van der Ben 654 (BR); Haut-Katanga, Kapumfi, rive du Lac Moero, 31 Dec 1965, J. - J. Symoens 12003 (BR, LSHI).

Rwanda, Lac Bulera, Butaro, 17 Feb 1972, P. Auquier 2578 (BR); Butare, Jun 1933, A. Becquet 714 (BR, WAG); Environs de Butare, rivière Nyamogari, 3 May 1957, D. van der Ben 1547 (BR); Rubona, 16 Feb 1960, G. Michel 6387 (BR); Akagera, marais Kajumbura, 30 Mar 1973, G. Troupin 14897 (BR).

Burundi, Kanyanya, Lac Rwihinda, 18 Apr 1971, J. Lewalle 5547 (BR); Gitwenge, 17 May 1978, M. Reekmans 7056 (LG, WAG).