GOMONT, Maurice 1892 (Jan. 1) Monographie des Oscillariées (Nostocacées homocystées) Annales des Sciences Naturelles, Botanique ser. 7, 16: 91-264, pls. 1-7 Plates referenced in text as roman numerals. Nostocaceae homocysteae, 1 January 1892 (Gomont, "Monographie des Oscillariées", in Ann. Sci. Nat., Bot., ser. 7, 15: 263-368; 16: 91-264). The two parts of Gomont's "Monographie", which appeared in 1892 and 1893, respectively, are treated as having been published simultaneously on 1 January 1892