Megastoma Grassi in Atti Soc. Ital. Sci. Nat. 24: 167. 1881 Megastoma Grassi in Atti Soc. Ital. Sci. Nat. 24: 167. 1881is earlier homonym of Megastoma (Benth.) Bonnet & Barratte, Explor. Sci. Tunisie, Ill. Bot. 3: t. 11, fig. 4-11. 1895This name is not assigned to any taxon.
