Dieterici, Friedrich Heinrich
Pick, Emil Gerhard
Moriz, Carl Philip
Russegger, Joseph
Heuglin, Martin Theodor von
Niemeyer, August Hermann
Pottinger, Heinrich
Hulsius, Leuinus
Perkins, Justin
Gerlache de Gomery, Adrien de
Fränzel, Walter / Goldfriedrich, Johann
Schmidt, Wilhelm
Angas, George French
Spring, Albert