IN AMPELOGRAPHY. 79 



Riparia Grand Glabre. 



VITIS RIPARIA. AMERICA. 



LEAVES. Rather small, elongated, thin, but not flabby, 

 very smooth, often shiny, lateral margins 

 almost parallel. 



WOOD. Red ; secondary ramifications relatively numerous. 



Grouping of Varieties of Vitis Riparia. 



a. Leaves very large, flabby, rounded. 

 Bark thin, little coloured. Ex. 

 Riparia Gloire. 



Group No. 1. 



Glabrous Riparias. b. Leaves very large, rounded. Bark 



Herbaceous shoots, very thick, strongly Coloured. Ex. 



smooth, without stiff hair. Riparia violet. 



c. Leaves relatively small, elongated, 

 smooth, relatively hard although 

 thin, shiny. Wood very red, 

 secondary ramifications rela- 

 tively numerous. Ex. Riparia 

 Grand Glabre. 



Group No. 2. 



Tomentose Riparias. Wood (non-lignified), covered with 



stiff" short hair. Ex. Riparia 

 tomentose of las Sorres. 



