162 



AMERICAN VINES. 



The most vigorous and resistant hybrids of Berlandieri X 

 Monticola, may have a certain value for moderately calcareous 

 soils (Jurassic, and groie soils) ; but this value can only be 

 assumed, for they have not yet been sufficiently experimented 

 with in those soils. Certain forms of very fine vigour were 

 introduced in 1895 into our collections. 



Hybrids of V. Berlandieri and V. Cordifolia; of V. 

 Berlandieri and V. Cinerea; of V. Berlandieri and V. 



Lincecumii. A few rare hybrids of V. Berlandieri and V. 

 Cordifolia were indicated as existing, in a wild state, in 

 America, and were introduced into France as pure Berlandieris. 

 They possess a certain resistance to chlorosis, but -very inferior 

 to that of pure Berlandieri, and are recognisable by their very 

 varnished-like leaves, with regular and well-defined teeth. 

 In the numerous consignments of Berlandieri made in latter 

 years, many hybrids of s Berlandieri and Cinerea have been 

 introduced, easily distinguishable by their leaves, which 

 are cordiform, elongated, finely goffered in structure, of a 

 deep dull green on both faces, with numerous short greyish 

 hair on the ribs of the under-face, and by their fluted canes. 

 Certain individual forms have a very great vigour, but are 

 far inferior to Berlandieri for chalky soils ; they seem, how- 

 ever, to have a certain value for very compact and damp 

 clayey-calcareous soils ; they root from cuttings more freely 

 than Berlandieri. A few hybrids of Berlandieri and Cinerea 

 have been created by Millardet and de Grasset, and by Cou- 

 derc; they root badly from cuttings, and are much affected 

 by chlorosis. Hybrids of Berlandieri and Lincecumii also 

 exist in a wild state, but have not been introduced into 

 Europe. 



Hybrids of V. Berlandieri and V. Riparia. The 



hybrids of Riparia and Berlandieri seem a priori, on account 

 of their procreators, to have real value for calcareous and 

 chalky soils. The Riparia is vigorous, slightly resistant to 

 chlorosis, and very resistant to phylloxera; it roots very freely 

 from cuttings, and when grafted the grafts are very produc- 

 tive. The Berlandieri shares these qualities, but to a -very 

 much higher degree, especially as far as productivity and re- 

 sistance to chlorosis are concerned, but normally it does not 

 root from cuttings. It would seem that by uniting it to 

 Riparia one might endow the offspring with the properties 

 of rooting freely, while maintaining the essential qualities of 



