THE TRUE PINES. 273 



margins, mucronate, or somewhat spiny-pointed, bright green, 

 and from six to eight inches long, and one-third of a line wide. 

 Cones three or four in a whorl, broadly-ovate, or somewhat 

 rounded, more or less pendulous when full grown, nearly sessile, 

 and from one and three quarters to two and a half inches long, 

 and one inch and a half broad near the base. Scales some- 

 what rhomboid, more or less pyramidally elevated, and slightly 

 keeled transversely. Umbone either slightly elevated or de- 

 pressed, and hardly mucronate. Seeds small, with short 

 oblong wings. 



A tree from 50 to 60 feet high, found' on the KhasiyahiUs at 

 elevations from 2000 to 6000 feet, and on the mountains of 

 Upper Assam in Eastern India. 



It is quite tender. 



No: 41. PiNUS Lawsoni, Roezl, Lawson's Mexican Pine. 



Leaves mostly in threes, but sometimes in fours, six inches 

 long, rather slender, sharp-pointed, angular on the inner face, 

 rounded on the outer one, and quite entire on the margins. 

 Sheaths on the young leaves nearly an inch long, and composed 

 of distant, sharp-pointed, loosely imbricated scales, silky at the 

 edges, while those on the adult leaves are much wrinkled, half 

 an inch long, more or less furnished with distant scales, and 

 jagged at the ends. Branchlets rather slender, very leafy, and 

 furnished with a broad, acute-pointed scale at the base of each 

 sheath of leaves, when young. Buds covered with imbricated, 

 resinous scales. Cones from two to two and a half inches long 

 and one inch and a half broad near the base, conical in shape, 

 ashy-gray in colour, and very much resembling those of Pinus 

 sylvestris in size, shape, and general appearance. Scales very 

 small, mostly equal in size, except those at the base of the cone, 

 which are smallest, while those on the outer or exposed part 

 are much the largest, more elevated or thickened at the points, 

 and sometimes slightly recurved ; protuberances rounded on 

 T 



