Mitriostigma usambarense Verdc. (1987, p. 245)

Type: Tanzania, west Usambara Mountains, Mazumbai, Lovett, J. C. and Lovett, I. M. 171 (holotype: K, isotypes: BR, DSM, MO) .

Distribution

Afromontane regional centre of endemism: mountain ranges of northeast Tanzania (Fig. 4).

Additional specimens examined

Tanzania

Kilimanjaro region: same district, south Pare Mountains, Chome forest reserve, Festo, Gereau and Umila 94 (BR, MO) ; ibid., Kindeketa, Mwasumbi and Mlangwa 1302, 1302A, 1295 (BR, MO); ibid., Mwangoka, Mwasumbi and Umila 1085 (BR, MO); ibid., Mwangoka and Mwangulango 1104 (BR, K, MO) .

Tanga region: Balangai West Forest Reserve, southeast slope of Kilimandege, Borhidi, Demissew, Hedren and Iversen 84298 (K, VBI) ; ibid., Borhidi, Demissew, Hedrén and Iversen 84299 (NHT); west Usambara Mountains, Kwamshunde, Tanner 261 (K) ; Lushoto, Usambara Mountains, Balslev 302 (MO) .