AMERICAN VINES. 



11 



state in pebbly red-coloured soils rich in silica, and is also 

 found occasionally in dry soils formed of calcareous pebbles 

 and rich blue marl. 



Fig. 3. Leaves of Wild Riparia, young and adult (after M. Mazade). 



(b) V. Riparia. The 

 plant of climbing habit, 



V. Riparia is generally a slender 

 reaching large dimensions. Its 



