Sorting and blending of unit characters. 



209 



The photographs reproduced in connection with tliis article present 

 in very graphic form nearly all the characters of the two parents and 

 their three hybrids. The fact that the parents differ by so many con- 



0. pycnocarpa 



0. nutdla (p >\ n) 



0. pycnella (p X n) 



Fig. .5. 



Rosettes (autumnal) of Oe. pycnocarpa and tJie two hybrid types obtained in the 



F^ generation of the cross, pycnocarpa X nutans. 



Induktive Abataiumuiigs- und Vererbungslehre. XVI. 14 



