David Starr Jordan 



hundred descendants of this cross are now hving. 

 Darwin acepted with reservations the account of 

 the graft hyhrids in potatoes, and there still remains 

 some doubt of reliable testimony of the supposed 

 act. He also speaks of a now well-known grafts 

 hybrid of a yellow and purple cytisus, which is 

 perhaps the most remarkable fact in this line on 

 record." 



Opuntia ficus-indica and its Hybrid with O. uulgaris^ the Hybrid 

 Flower far Larger than either Parent. 



21 



