Juglans 275 



Identification 



The form of this species usually cultivated in England is distinguished in 

 summer by its small leaves, bushy habit, and the other characters given above. 

 In winter the following characters are available; — Twigs very slender, olive- 

 green or brown, densely pubescent. Leaf-scars set obliquely on prominent pulvini, 

 small, obcordate, notched above, without pubescent band above the upper margin ; 

 bundle-dots in three groups. Terminal bud elongated, slender, densely and minutely 

 pubescent, the tips of the two outer scales slightly lobed. Lateral buds, arising at 

 an angle of 45°, minute, ovoid, pubescent, usually solitary. Pith small, brownish, 

 with wide chambers. 



Distribution 



According to Sargent this species occurs on the limestone banks of the streams 

 of central and western Texas, shrubby or rarely more than 30 feet high (var. typica) ; 

 common and of larger size in the canons of the mountains of New Mexico and 

 Arizona south of the Colorado plateau. It is also met with in northern Mexico,^ 

 where it frequently leaves the mountain caiions, following the water-courses which 

 are dry throughout most of the year. In such situations its average diameter is 

 12 to 18 inches, and its height 20 to 30 feet; the nuts, less than an inch in 

 diameter, are scarcely edible. 



Cultivation 



This species was discovered in western Texas in 1835 by Berlandier. It was 

 growing in 1868 in the Botanic Garden at Berlin, according to a note in Engelmann's 

 Herbarium." It does not seem to have been known in England till 1894, when seeds 

 from Fort Huancha in Arizona were sent to Kew by Sargent. A tree grown from 

 this seed has attained now (1905) about 12 feet in height. There is one nearly as 

 large at Tortworth, and a seedling from Kew is planted at Colesborne, where it 

 seems at least as hardy as the common species and ripens its wood earlier. A tree 

 planted at Mount Edgcumbe, near Plymouth, in 1898 is 9 feet 4 inches high, with 

 a spread of 10 feet. It has been cut back twice, and looks better as a bush than 

 as a tree. (A. H.) 



1 Garden and Forest, 1888, p. 106. * Sargent, Silva N. America, loc. cit. 126. 



