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The following table shows the value of the phylloxera 

 resistance, in the same slightly fertile clay limestone soil, 

 of diverse forms of Rupestris studied at the same age: 



Resistance. 



Rupestris Mission 

 Rupestris du Lot 

 Rupestris Ganzin . . 



Rupestris Martin 

 Rupestris a pousses violacees 

 Rupestris Metallica 

 Rupestris Ecole 



Rupestris de Fortworth (form described) 

 Rupestris de Kansas 

 Rupestris No. 62 of Jaeger 

 Rupestris Y (Couderc) 

 Rupestris x (Couderc) 

 Rupestris Arkansas (Jaeger) 

 Rupestris of Cleburne (Jaeger) 

 Rupestris No. 66 (Jaeger) 

 Rupestris du Texas (Jaeger) 

 Rupestris No. 64 (Jaeger) 

 Rupestris No. 65 (Jaeger) 



Rupestris Mission. This form of Rupestris grows at the 

 School of Agriculture, Montpellier, where it was imported 

 in 1887, and which alone has per- 

 sisted with vigour and remarkably 

 large trunk, and always green leaves, 

 in a plot of Rupestris and Riparia 

 X Rupestris, planted in a very dry, 

 slightly fertile, clay -limestone soil. 

 Its habit is well spread, the canes 

 strong and long, internodes of 

 medium length, secondary ramifi- 

 cations relatively few, short and 

 slender, young shoots smooth, shin- 

 ing and vinous-yellow. The lignified 

 canes clear hazel colour, pinkish 

 near the nodes, which are straight, 

 cylindrical, and only slightly prom- 

 inent. Leaves (Fig. 32) rather 

 small, wider than long, symmetri- 

 cal; they are, and this is charac- 

 teristic, deeply folded along the 

 mid-rib, with the two margins of 

 the limb folded a little inwards 

 above the plane of the leaf, the under side of the leaf 

 turned, and showing in front ; completely glabrous ; upper-face 



u 



f 



Fig. 32. Leaf of V. 

 Rupestris Mission. 



