By Sagara
Elias Pieter van Bommel (Dutch, 1819 - 1890)
Franz Holper (Austrian, 1862-1935)
Carl Kenzler (German, 1872-1947)
Johannes Bartholomäus Duntze (German, 1823-1895)
Julian Falat (Polish, 1853-1929)
Alexander Joseph Daiwaille (Dutch, 1818 - 1888)
Barend Cornelis Koekkoek (Dutch, 1803-1862)
Alfred Augustus Glendening (English, 1861 - 1903)
Adrianus Eversen (Dutch, 1818-1897)
Walter Launt Palmer (American, 1854-1932)
Sigvard Marius Hansen (Danish, 1859-1938)