Pseudosopubia hildebrandtii (Vatke) Engl. [family SCROPHULARIACEAE], in Ann. Ist. Bot. Roma 7: 28 (1897) & in E.J. 23: 511 (1897); Hemsley & Skan in F.T.A. 4(2): 442 (1906); Blundell, Wild Fl. E. Afr.: 377, pl. 787 (1987); U.K.W.F.: 259, pl. 111 (1994); Fischer in Thulin (ed.), Fl. Somal.: 3: 285 (2006) & in Fl. Ethiop. & Eritr. 5: 290 (2006). Type: Kenya, Kwale/Kilifi District: Maji ya Chumvi [Tchamtéi] in Duruma, Hildebrandt 2314b (B†, holo.). Neotype: Kenya, Northern Frontier District: Moyale, Gillett 12843 (K!, chosen here)
Sopubia hildebrandtii Vatke [family SCROPHULARIACEAE], in Linnaea 43: 314 (1882)
Sopubia kituiensis Vatke [family SCROPHULARIACEAE], in Linnaea 43: 313 (1882). Type: Kenya, Kitui, Hildebrandt 2757 (K!, holo.)
Pseudosopubia obtusifolia Engl. [family SCROPHULARIACEAE], in Ann. Ist. Bot. Roma 7: 28 (1897) & in E.J. 23: 511, t. 13l–q (1897); Hemsley & Skan in F.T.A. 4(2): 444 (1906). Type: Ethiopia, between Karena and Daua, Riva 950 (FT, holo.)
Pseudosopubia kituiensis (Vatke) Engl. [family SCROPHULARIACEAE], in Ann. Ist. Bot. Roma 7: 28 (1897) & in E.J. 23: 511 (1897); Hemsley & Skan in F.T.A. 4(2): 442 (1906)
Pseudosopubia ambigua Hemsl. & Skan [family SCROPHULARIACEAE], in F.T.A. 4(2): 443 (1906). Type: Tanzania, Lushoto District: Usambaras, Umba Valley, Smith s.n. (K!, holo.)
Pseudosopubia elata Hemsl. & Skan [family SCROPHULARIACEAE], in F.T.A. 4(2): 443 (1906). Type: Kenya, Lamu District: Witu, A.S. Thomas 9 (K!, holo.)
Pseudosopubia polemonioides Chiov. [family SCROPHULARIACEAE], Fl. Somal. 2: 338 (1932). Type: Somalia, Lake Dera, Balladelli 287 (FT, holo.)