IN AMPELOGRAPHY. 83 



Rotundifolia (Vitis). 



AMERICA. 



LEAVES. Small, cordiform, very smooth, shiny, parch- 

 ment-like. 



Petiole, extremely long. 



BUNCH. Very small, consisting of two or three large 

 spherical berries, often of only a single berry. 



WOOD. Resembling that of the quince, bark never ex- 

 foliating as among other Vitis ; numerous 

 lenticels impart to the lignified wood a 

 greyish tint ; without diaphragms. 



Tendrils, simple. 



F 2 



