Coleus monostachyus (P. Beauv.) A. J. Paton subsp. monostachyus

= Solenostemon monostachyus var. amplifrons Briq. Bull. Herb. Boissier, sér. 2, 6: 826. 1906. Type: DR. Congo, Bangala, 26 May 1888, F. Hens ser. C, 33 (holotype Z [Z- 000021117]).

Description.

Paton et al. (2022: 52).

Distribution.

W Tropical Africa to S Chad and Cabinda.

Habitat and ecology.

Disturbed ground, cultivated fields, fallow fields, rainforest, wetland, occasionally epiphytic on palm stipe; 60–800 m elev.

Additional specimens.

DR. Congo, Mayumbe, Gimbi, vallée de la Mvuzi, 5 Jan 1949, L. Toussaint 720 (BR); Bas-Congo, Kinsonia, 9 Mar 1960, P. Compère 1589 (BR); Kitobola, 15 May 1910, A. Flamigni 176 (BR, US); Terr. Masina, Kimbangu, 20 Dec 1978, L. Pauwels 6093 (BR, WAG); Kasaï, Kutu, 30 Oct 1903, Em. & M. Laurent s. n. (BR); Kapanga, Apr 1934, F. Overlaet 1213 (BR); Forestier central: Mulumbela, 27 Jan 1980, Y. & T. Ankei 79 / 1042 (BR); Bambesa, 16 Sep 1958, A. Blomme 122 (BR); Bongabo, 6 Jun 1971, H. Breyne 1695 (BR); Territ. Banalia, route Kole-Kanwa, km 24, 13 Jun 1932, Galdermans 10 (BR); Territ. Ekota-Bakutu, Sep 1934, L. Dubois 565 (BR); Karawa, Apr 1924, V. G. Goossens 4485 (BR); Bokuma, 26 Feb 1941, G. Hulstaert 61 (BR); Eala, 22 May 1946, J. Léonard 164 (BR); Yangambi, 29 Oct 1913, A. Michiels 32 (BR); Barumbu, 29 Aug 1938, J. Louis 11061 (BR, U, US); Ubangi-Uele, Bodangabo, 15 Feb 1955, C. Evrard 200 (BR); Digba, 13 Sep 1952, P. Gérard 252 (BR); Tukpwo, 9 Jul 1959, P. Gérard 3984 (BR);

Note.

Specimens with unusually large leaves (e. g. W. Robyns 4263) correspond to “ var. amplifrons ’, but variation is continuous and this variety is not retained here.