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
Petropoli, Typ. Imp. akademii nauk, 1900
1900
The LuEsther T Mertz Library, the New York Botanical Garden