IN AMPELOGRAPHY. 87 



Rupestris Martin. 



VITIS RUPESTRIS. AMERICA. 



LEAVES. Cordiform, thick, deep green, wrinkly at the 

 centre,* irregularly folded along the mid- 

 rib ; margins of the leaf largely undulating 

 and curled up. 



Petiolar sinus Y shape. 



Teeth very large and much rounded. 



WOOD. Very sinuous. 



Grouping of Varieties of Vitis Rupestris. 



Group No. 1. 



Margins of leaves very slightly undulating, regularly 

 folded along the mid-rib, generally small. General colour 

 yellowish-green. Habit very bushy. Ex. Rupestris Ganzin. 



Group No. 2. 



Leaves slightly folded along the mid-rib, margins undu- 

 lating ; petiolar sinus bracket shaped. Ex. Eupestris du 

 Lot. 



Group No. 3. 



Leaves with dark metallic reflection, rather large. Habit 

 rather spreading. Ex. Rupestris Martin. 



* This character is particularly noticeable in leaves of the principal 

 ramifications, and which are consequently of large size. 



