POTATO FLOWERS 



(1) Early Ohio, flowers dropping before opening; (2) Early Ohio, flowers dropping after 

 opening; (3) seed-balls setting on a cross between Keeper and Silverskin; (4) same as 

 No. 3, showing greater development ; note that some of the flowers on these two clusters 

 have not set seed-balls; (5) longitudinal section of anther showing complete pollen 

 abortion; (6) apparently normal ovule development in flowers which generallv drop: 

 (7) cross-section of an anther showing, as in No. 5, practical! v complete pollen abortion. 

 (Fig. 19.) 



