AMERICAN VINES. 37 



resistant (19). It has great vigour, and the way in which 

 it grows in compact, dry, and pebbly soils gives it a great 

 value as a graft-bearer, especially for the eastern districts 

 of France, where it is planted instead of Riparias in many 

 limestone soils too dry and too unfertile for the latter. In 

 damp soils it is much affected by pourridie. 



Description. Habit, very erect (the main ramifications 

 alone spreading on the ground) ; canes knotted, very 

 ramified, with short internodes ; leaves very much folded 

 along the mid-rib, with undulating margins, bright, with 

 light metallic sheen, rather thin, petiolar sinus bracket 

 shaped, teeth irregular, rather acute, especially that form- 

 ing the terminal lobe ; leaves of the secondary ramifications 

 sometimes very small, extremities bronze coloured (Fig. 20). 

 If the season is very dry the leaves all fold along the mid- 

 rib and the metallic sheen disappears. Flowers, male ; 

 roots rather stouter than those of the other Rupestris.* 



RUPESTRIS MABTIN. 



The Ruspestris Martin was introduced from Texas in 

 1874, by Martin, at Montels-Eglise, near Montpellier, and 

 may be regarded as the equivalent of Rupestris du Lot 

 for the western regions, where it grows very well in clayey 

 and rather cold soils. It is affected by dry limestone much 

 more than the latter, but it resists phylloxera quite as 

 well (19), and bears grafts equally well. It is an 

 excellent graft-bearer for non-calcareous or only slightly 

 calcareous soils which do not become dry in summer. 



M. Mazade gives the following description of this vine : 

 Leaves (Fig. 21) 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 V 

 shape ; teeth very large and much rounded ; wood very 

 sinuous. 



RUPESTRIS GANZIN. 



According to Millardet, this form was imported from 

 Texas by Charles Martin, in 1874. Dr. Davin and Couderc 

 noticed and propagated it. In 1880 Millardet studied it 



* Many illustrations and descriptions have been borrowed from M. Mazade's Guide, pour 

 facihter la reconnaissance de quelquen Ctpages, done into English by the present trans- 

 lators, under the title : First Steps in Ampelo^raphy. Department of Agriculture, 

 Victorifc, i90U 



