22 
Agricultural Experiment Station 
berries resulted from this cross, from which two seeds were obtained. 
Here again we have evidence of Vitis rotundifolia hybridizing with its 
F x generation hybrid vines. 
Parthenocissus Quinquefolia (Planch.) X Vitis Rotundifolia 
In 1916 eleven flower clusters on a native vine of Parthenocissus 
quinquefolia (Planch.) were bagged and the flowers, 410 in number, 
were carefully emasculated and later, when the pistils matured, pollen 
from some Rotundifolia vine was applied. Ho fruits developed in any 
of these bags. 
Vitis Rotundifolia X Parthenocissus Quinquefolia (Planch.) 
In 1916 nine flower clusters on a Flowers vine were bagged and 
dusted with fresh pollen from P. quinquefolia. Ho fruits developed in 
any of these bags. Four flower clusters were also bagged on Munson’s 
Sanmonta vine which in all probability is a Rotundifolia-Munsoniana 
.hybrid. The flowers were dusted with fresh pollen from P. quinquefolia. 
Ho fruits developed in any of these bags. Our efforts so far have been 
fruitless with both crosses. 
Parthenocissus Tricuspidata (Planch.) X Vitis Rotundifolia 
In 1916 ten flower clusters (460 flowers) on a local vine of Partheno¬ 
cissus tricuspidata were carefully emasculated and as the pistils matured 
they were dusted with pollen from a Rotundifolia vine. Hone of these 
flowers produced a berry. 
Vitis Rotundifolia X Parthenocissus Tricuspidata (Planch.) 
In 1916 six flower clusters on the variety Flowers were bagged and 
dusted with fresh pollen from P. tricuspidata. Ho fruits developed in 
these bags. 
Five flower clusters on the variety Sanmonta were bagged and dusted 
with pollen from P. tricuspidata. Ho fruits developed from any of these 
flowers. 
Our effort so far to hybridize Parthenocissus tricuspidata with V. 
rotundifolia and vice versa has proven fruitless. 
Ampelopsis Heterophylla (Sieb. and Zucc.) Variety Elegans 
(Koch) X Vitis Rotundifolia 
In 1918 four flower clusters on a vine of Ampelopsis heterophylla 
(Sieb. and Zucc.) variety Elegans (Koch) were carefully emasculated 
and dusted with pollen from V. rotundifolia. Ho fruits developed from 
any of these flowers. 
