Enumeratio plantarum anno 1890 in Caucaso lectarum : additis nonnullis speciebus a claris viris H. Lojka, G. Radde, N. Seidlitz et fratr. Brotherus in eadem ditione lectis - Sommier, Stefano, 1848 -1922 (Typ. Imp. akademii nauk, 1900)

The Eskimo tribes; their distribution and characteristics, especially as regards language, with a comparative vocabulary and sketch-map - Rink, H. (Hinrich), 1819 -1893 (1887)

Essai sur les Leucoloma et supplément au prodrome de la flore bryologique de Madagascar, des Mascareignes et des Comores - Renauld, Ferdinand, 1837 -1910 (Impr. de Monaco, 1909)

Die Europaischen Laubmoose - Roth, Georg, 1842 -1915 (W. Engelmann, 1904)

Die Europaischen Laubmoose - Roth, Georg, 1842 -1915 (W. Engelmann, 1905)