IIO AMERICAN VINES. 



great development of the limb, which is terminated by a 

 long tooth the tooth of the terminal lobe is slightly incurved 

 underneath; regular goffered structure between the main 

 ribs, which are of a vinous-red colour mostly at their 

 origin; dark green, rather shining on the upper-face, paler 

 green, light pink ribs with stiff hair on the under-face; 

 petiolar sinus deep, like an open U; two series of acute 

 teeth. Petiole strong, vinous-red. 



Riparia Grand Glabre. This variety was selected at Mon- 

 tagnac by G. Arnaud, and is identical with Riparia No. 13 

 of Meissner's collection. Canes long, internodes long, 

 medium thickness, of a purple tint during the herbaceous 

 state; hazel-grey, slightly vinous with much bloom, and 

 red near the nodes when lignified. Leaves (Fig. 5,3) medium 

 or above medium, cordiform, lateral superior lobes each indi- 

 cated by longer teeth, margins incurved underneath, lustrous 

 dark green upper-face, yellowish-green, with stiff hair on 

 the ribs of the under-face; teeth acute, slightly deep; 

 petiolar sinus widely open, V-shape. 



(c) Adaptation and Culture. The V. Riparia is highly 

 resistant to phylloxera; the grafts it bears are very vigorous, 

 very fructiferous, and mature early. All the forms of the 

 species take root very easily from cuttings or grafted cuttings: 

 they can also be easily grafted when they have been in the 

 ground a number of years, and bear most grafts of European 

 vines fairly well. 



The V. Riparia is also very resistant to cold, and can be 

 cultivated in all the viticultural regions of Europe. This 

 grafting-stock, which came after the Concord. Taylor, Clinton, 

 at the begirming of the reconstitution with American vines, 

 was certainly boomed excessively; it was a mistake to believe 

 that on account of its vigorous, resistant, and producing 

 qualities it could be successfully cultivated in all soils with- 

 out exception. It was necessary, for this variety especially, 

 to know the grounds in which it was growing in America. 

 The Riparia was planted indiscriminately in the most sili- 

 ceous as well as strongly calcareous soils. Consequently, 

 complete failures were recorded, which resulted in a disbelief 

 of the value of American vines and induced a reaction which 

 resulted in the Riparia being discarded for some time. The 

 properties of the Riparia are now well known, as this graft- 

 ing-stock alone has served to reconstitute nearly 1,136,400 

 acres (1895) ou t f a total of 1,730,000 acres of American 



