STRYCHNOS spinosa (Gilg) E. A. Bruce subsp. volkensii [family LOGANIACEAE], in K.B. 1955: 40 (1955). Types: Tanganyika, Tanga, Holst 2095 (B, syn.†, K, isosyn.!) & Volkens 103 (B, syn.†, BM, isosyn.!)
STRYCHNOS volkensii Gilg [family LOGANIACEAE], in P.O.A. C: 311 (1895); F.T.A. 4 (1): 536 (1903); T.S.K.: 126 (1936); T.T.C.L.: 278 (1949); Lejeunia 13: 111 (1949)
?STRYCHNOS sansibarensis Gilg [family ], in E.J. 28: 124 (1899); F.T.A. 4 (1): 535 (1903); T.T.C.L.: 277 (1949). Type: Zanzibar, unlocalized, Stuhlmann 161 (B, holo.†)
STRYCHNOS megalocarpa Gilg & Busse [family LOGANIACEAE], in E.J. 32: 180 (1902); F.T.A. 4 (1): 526 (1903); T.T.C.L.: 278 (1949). Type: Tanganyika, Handeni District, Kwa Sseulanga [Kwa-Zuranga], Busse 323 (B, holo.†)
STRYCHNOS omphalocarpa Gilg & Busse [family LOGANIACEAE], in E.J. 32: 181 (1902); F.T.A. 4(1): 525 (1903); T.T.C.L.: 278 (1949). Type: Tanganyika, Handeni District, Kwa Mdoë [near Handeni], Busse 322 (B, holo.†)
STRYCHNOS radiosperma Gilg & Busse [family LOGANIACEAE], in E.J. 36: 108 & t. 2c (1905); T.T.C.L. 275 (1949). Type: Tanganyika, Kilwa District, Matumbi Mts., near Mirungamo, Busse 3061 (B, holo.†, BM, EA, HBG, iso.!)
STRYCHNOS cuneifolia Gilg & Busse [family LOGANIACEAE], in E.J. 36: 109 (1905); T.T.C.L.: 273 (1949). Type: Tanganyika, Lindi District, Lake Lutamba, Busse 2519 (B, holo.†, EA, iso.!)
STRYCHNOS spinosa [family LOGANIACEAE], [sensu T.S.K.: 125 (1936), non Lam.]