HIBISCUS ahlensis Ulbr. [family MALVACEAE], (1920);. type: N2, “Ahl” Mts, Hildebrandt 1375 (B holo., destr.).
HIBISCUS sanguineus Franch. [family MALVACEAE], (1883), nom. illeg., non Griffith (1854);. type: N2, “Barkeia-Kogué”, Révoil s.n. (P holo., not found).
HIBISCUS micranthus (Franch.) Hochr. var. sanguineus [family MALVACEAE], in Ann. Conserv. Jard. Bot. Genève 4 (1900);. type: N2, “Barkeia-Kogué”, Révoil s.n. (P holo., not found).
HIBISCUS ouarsangelicus Cuf. [family MALVACEAE], (1959), not validly published;. type: N2, “Barkeia-Kogué”, Révoil s.n. (P holo., not found).