371 



Fig. 82.— PINUS ARISTATA and P. BALFOURIANA. 



Pinus aristata. — a, branclilet ; 6, part of shoot with three leaf clusters showing resin exudation ; 

 c, winter bud ; d, smooth apex of leaf ; e, section of leaf showing two resin canals. P. Bai- 

 fouriana.^., cluster of five needle leaves ; g, section of leaf. 



Pinus Ayacahuite, Ehrenberg. 

 Mexican White Pine. 



Hickory Pine ; the Ayacahuite Pine. 



A tree up to 100 or more ft. high and 12 ft. in girth, with the 

 graceful habit of P. excelsa. Bark thin and smooth, except on 

 old trees, where it is thicker and fissured or scaly about the lower 

 parts. Young shoots covered with short, soft, orange-coloured 

 hairs, or occasionally glabrous, bright brown or greyish in colour. 



