Clerodendrum johnstonii Oliver (1887: 346)

Meerts, Pierre, 2023, The genus Clerodendrum (Lamiaceae) in the flora of Central Africa (D. R. Congo, Rwanda, Burundi), Phytotaxa 594 (1), pp. 1-42 : 20

14. Clerodendrum johnstonii Oliver (1887: 346) ; Baker (1900: 300); De Wildeman (1920b: 170; 1922: 262); Robyns (1947: 145, 146); White (1962: 367); Malaise (1985: 274); Verdcourt (1992: 118); Lebrun & Stork (1997: 512); Fernandes (2005: 115); Bloesch et al. (2009: 626).

Type:— TANZANIA. Kilimandjaro, 5000 ft, Johnston s. n. (holotype: K000192878) .

Key to the varieties of C. johnstonii :

1. Lower surface of leaf uniformously tomentose............................................................................................................. var. johnstonii

- Lower surface of leaf with indumentum only on veins, short to curly...............................................................................................2

2. Lower surface of leaf with glands inconspicuous, pellucid; flower bud puberulent, with pale glands................... var. marsabitense

- Lower surface of leaf conspicuously red-gland dotted; flower bud pubescent, red gland-dotted....................... var. rubropunctatum