PLANT HYBRIDIZATION BEFORE MENDEL 



179 



Taken as a whole, Wichura's work dealt, not with the investi- 

 gations of individual specific characters, but with species taken 

 entire and treated as such. As was the general custom, he regarded 

 a "species" as an integral w^hole, that could be crossed in its en- 

 tirety. With this conception he made what he called "binary," 



Plate XXXV. Max Ernest Wichura, 1817-1866, Jurist, Botanist, Regierungsrat at Breslau 

 (1859-1866). 



