Coleus cylindraceus (Hochst. ex Benth.) A. J. Paton, Phytokeys 129: 37. 2019.

≡ Plectranthus cylindraceus Hochst. ex Benth. in A. P. de Candolle, Prodr. 12: 60. 1848. Type: Ethiopia, near Gapdia, ad rupes, 29 Nov 1838, G. W. Schimper II. 1113 (holotype K [K 000431901], [K 000431904], [K 000431900]; isotype BM [BM 000564023], E, FI [FI 011097], [FI 000844], G [G 00435204], [G 00435206], [G 00435205], HAL [HAL 0114463], M [M 0104743], [M 0104744], MPU [MPU 015435], P [P 00450713], [P 00450711], [P 00450712], PRE [PRE 0235122-0], TUB [TUB 009112], UPS, W).

= Plectranthus montanus Benth. in N. Wallich, Pl. Asiat. Rar. 2: 17. 1830., non Coleus montanus Hochst. ex Ces. Type: India, Deccan Peninsula, exact locality unknown (“ Peninsula India Orientalis ”), Herb. Wight in Wall. Cat. 2747 B (lectotype K [K 000820120]), designated by Suddee et al. (2004); isolectotype K-W [K 001117007]).

Description.

Paton et al. (2009: 318), Paton et al. (2013: 260), as Plectranthus montanus Benth.

Distribution.

Tropical and S Africa, Arabian Peninsula, S India.

Habitat and ecology.

Wooded savannah, rock outcrops, marshland, fallow fields; 1000–1400 m elev.

Additional specimens.

DR. Congo, Lacs Edouard et Kivu, May ya Moto, 14 Nov 1954, G. F. de Witte 2042 (BR).

Rwanda, Ngoma, Rukoma Nganza, Jun 1933, A. Becquet 685 (BR); Préfecture Kibungo, Concession minière de Géorwanda-Rwinkwavu-colline dominant la plaine de Matinza, 21 May 1969, G. Bouxin & M. Radoux 455 (BR); Préfecture Kigali, entre Karama et frontière du Burundi, à 14 km de Karama (Bugesera), 18 May 1978, G. Troupin 15922 (BR); Biumba. marais Kibondo, 26 May 1955, A. R. Christiaensen 895 (BR).

Burundi, Muyinga, Murehe, 30 May 1981, M. Reekmans 10495 (BR, MO, WAG).

Note.

G. F. de Witte 6449 (BR), from Haut-Katanga, Upemba National Park, is intermediate between C. cylindraceus and C. succulentus . See also note under the latter species.