Landolphia tomentella Stapf A. Chev. [family APOCYNACEAE], in Bull. Soc. Bot. Fr. 53: 21 (1906). Type as for Landolphia owariensis var. tomentella.
Landolphia turbinata Stapf ex A. Chev. [family APOCYNACEAE], tom. cit.: 32 (1906). Type from Uganda.
Landolphia glaberrima A. Chev. [family APOCYNACEAE], op. cit. 55, Mém. 8: 45 (1908). Syntypes from Central African Republic.
Landolphia mayumbensis Good [family APOCYNACEAE], in Journ. Bot., Lond. 67, Suppl. Gamop.: 83 (1929). Type from Angola.
Ancylobotrys sp. 1 [family APOCYNACEAE], — F. White, F.F.N.R.: 346 (1962).
Landolphia owariensis P. Beauv. [family APOCYNACEAE], Fl. Oware Bénin 1: 55, t. 34 (1806). — Pichon in Mém. Inst. Fr. Afr. Noire 35: 109, map 7 (1953).— H. Huber in F.W.T.A., ed. 2, 2: 55, fig. 213 (1963). — Fanshawe, Check List Woody Pl. Zambia: 25 (1973). Type from Nigeria.
Vahea owariensis P. Beauv. F. Muell. [family APOCYNACEAE], in Wittst., Org. Const. Pl.: 258 (1878). Type as above.
Pacouria owariensis P. Beauv. Hiern [family APOCYNACEAE], in Cat. Afr. Pl. Welw. 1: 661 (1898). Type as above.
Landolphia gentilii De Wild. [family APOCYNACEAE], Obs. Apocyn. Latex: 20 (1901). Type from Zaire.
Landolphia owariensis var. tomentella Stapf [family APOCYNACEAE], in F.T.A. 4, 1: 51 (1902). Syntypes from the Sudan.
Landolphia humilis K. Schum. ex Stapf [family APOCYNACEAE], tom. cit.: 53 (1902). Type from Zaire.
Landolphia pierrei Hua [family APOCYNACEAE], in C.R. Acad. Sci. Paris 135: 868 (1902). Lectotype from Gabon.
Landolphia stolzii Busse [family APOCYNACEAE], in Engl., Bot. Jahrb. 32: 168 (1902). Type from Tanzania.
Landolphia droogmansiana Wildem. [family APOCYNACEAE], in Wildem. & Gentil, Lianes Caoutch. Congo: 59 (1904). Type from Zaire.