264 PINUS; OR 



A tree of small dimensions, growing about fifty feet liigh, 

 with its branches very elevated at the ends, which fact distin- 

 guishes it from all the other species. Its cones somewhat re- 

 semble those of Pinus grandis, but its leaves and the form of its 

 branches are entirely different. It is found upon the north side 

 of the Mountain of Tzompoli, in Mexico, at an elevation of 

 8,000 or 9,000 feet. 



No. 143. Pinus Thibaudiana, Roezl, Ihibaud's Mexican 



Pine. 



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



Leaves, in fives, slender, and from seven to eight inches long ; 

 sheaths, silky, one inch long. Cones, very much bent, six 

 inches long, and from one inch and a half to one inch and three- 

 quarters in diameter. Scales, thickened at the base, rhomboid, 

 rounded towards <he ends, with a slight transverse keel across 

 the middle ; protuberance medium size, rising in the middle, 

 and with a small, sharp point in the centre. 



An elegant tree, with horizontal branches when old, found 

 growing upon the north si'de of the Popocatepetl Mountain, in 

 Mexico, at an elevation of 8,000 or 9,000 feet. 



No. 144. Pinus Troubezkoiana, Roezl, Troubezkoi's Mexican 



Pine. 



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



Leaves, in fives, three-edged, eleven inches long ; sheaths, 

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

 two inches in diameter, and recurved. Scales, thickened at the 

 base, rhomboidal, with a transverse ridge across the centre, 

 highest in the middle, forming a large protuberance, very much 

 elevated, and terminating in a small point. 



A fine tree, eighty or ninety feet high, with a very straight 

 stem and long spreading branches, very remarkable for its 

 beautiful and regularly-arranged cones upon the branches. 



It was discovered on the western slopes of the Moun- 



