THE TRUE PINES. 213 



growth of as many years, — the branches being covered with 

 them in the same way as the trunk. 



The timber is red and hard, and the tree of a conical form ^ 

 growing about forty feet high, on poor, sandy soil. 



It is quite hardy. 



NEW OR DOUBTFUL KINDS, having the Leaves three 

 IN A Sheath, and of which nothing more is known. 



No. 50. Pinus Aculcensis, Roezl, the Aculco Pine. 

 (Discovered by M. Roezl in 1856-7.) 



Leaves, in threes, five inches and a half long, of a lively 

 glaucous green, stiff and tufted. Sheaths, three-quarters of an 

 inch long, and silky. Cones, oval, slightly curved, three inches 

 and a quarter long, and one inch and a quarter broad, resi- 

 nous, and of a dark violet colour. Scales, irregularly-shaped^ 

 sometimes quadrangular, very elevated, and flattened on the 

 apex ; protuberance large at the base, and acute angled. 



A very fine straight tree, with stout branches, found plentiful 

 at Aculco, near San Rafael, in Mexico, growing 150 feet high, 

 at an elevation of 13,000 feet. 



Timber, excellent. 



No. 51. Pinus Amecaensis, Roezl, the Ameca Pine. 

 (Discovered by M. Roezl in 1856-7.) 



Leaves, in threes, but sometimes in fours, on the same 

 branch, slender, and five inches and a half long. Sheaths, 

 nearly three-quarters of an inch long. Cones, three inches 

 long, and one inch and a quarter in diameter, of a conical 

 shape, and of a deep purple colour. Scales, rhomboid, small, 

 transversely keeled, one inch broad, and three-quarters of an 

 inch long ; protuberance small, terminating in a sharp point. 



A tall tree, growing 150 feet high, on the mountains of 

 Ameca in Mexico, at an elevation of from 13,000 to 14,000 feet. 

 ( ? Pinus Hartwegii.) 



