THE TRUE PINES. 265 



tains of Ixtacihuatl, in Mexico, at an elevation of 9,000 or 

 10,000 feet. 



No. 145. PiNUS TzoMPOLiANA, Roezl, the Tzompoli Pine. 

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



Leaves, in fives, slender, spread out, curved, and eight inches 

 long ; sheaths, whitish, silky, and three-quarters of an inch long. 

 Cones, pyramidal, four inches long, and one inch and three- 

 quarters in diameter, and quite straight. Scales, almost oval, 

 elevated at the summit, transversely keeled across, and de- 

 pressed at the base, three-quarters of an inch broad, and half 

 an inch long ; protuberance a little raised towards the top, 

 and terminating in a small blunt point. 



This tree grows from eighty to ninety feet high, very com- 

 mon upon Mont Tzompoli, in Mexico, with its branches regu- 

 larly placed, and quite straight. ( ? Pinus patula.) 



No. 146. Pinus valida, Roezl, the Valid, or strong-growing 



Mexican Pine. 



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



Leaves, in fives, three-edged, and twelve inches long ; sheaths, 

 one inch and a quarter long, and silky. Cones, oval, six inches 

 long, and two inches in diameter. Scales, rhomboid, with a 

 transverse ridge across the middle, highest in the centre, and 

 depressed at the base ; protuberance nearly level, with a re- 

 curved terminal sharp point. 



An extremely vigorous tree, with long horizontal branches, 

 found upon a small hillock on the Mountains of Ixtacihuatl, at 

 an elevation of 9,000 or 10,000 feet. 



No. 147. Pinus Van-Geerti, Roezl, Van-Geert's Mexican 



Pine. 



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



Leaves, in fives, three-edged, tolerably stout, and about ten 

 inches long ; sheaths, very long, from one inch and a half to one 



