Plate I 



All figures are of staminate types of fruitless plants. Rudiments 

 of pistils are present in Figs. 3, 4, and 5, but there is no stigmatic 

 surface in Fig. 3. All are from seedlings: Fig. 1 of a plant of 

 unknown parentage, Fig. 2 of America selfed, Fig. 3 of the cross 

 Vitis Berlandieri x V. riparia, Fig. 4 of the cross Solonis x Riparia 

 No. 616, and Fig. 5 of Croton selfed. 



