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103 



Fig. 50. Leaf of V. Arizonica. 



The V. Arizonica grows especially in the State of 

 Arizona and New Mexico, from the banks of riversjto the 

 highest and most arid lands, sometimes in very pebbly, 

 dry. calcareous soils It has been propagated, as grafting- 

 stock, in the soils of a similar nature in Cali- 

 fornia, where it is superior to V. Riparia. 

 Cuttings and grafted cuttings root freely, 

 and throw less suckers than V. Rupestris; 

 its resistance to phylloxera is rather high, Fig SI seed of 

 and may be represented by the number 16. v - Arizonica. 

 In the chalky soils of the Charente, where V. Arizonica 

 has been tried, it became slightly yellow, without, however, 

 degenerating in cottis* It is, therefore, from this point 



* See foot note, page 19. 



