PINUS MONTICOLA. 



349 



Pinus monticola. 



A tall tree 80100 feet high, with a 

 trunk 4 5 rarely 6 7 feet in diameter, 

 furnished with slender, sub - pendulous 

 branches that impart to the tree a narrowly 

 pyramidal outline, but in old age this is 

 greatly modified by the greater development 

 of some of the uppermost branches. In 

 Great Britain a somewhat slender tree 

 of denser habit than Pinus Strolms, 

 which it otherwise much resembles. Bark 

 of trunk greyish brown, much fissured 

 into small plates infinitely varied in size 

 and shape, the deeper longitudinal fissures 

 exposing a chocolate-brown inner cortex. 

 Branches spreading or more or less 

 depressed ; branchlets with reddish brown 

 bark, bearing the scars of fallen leaves. 

 Buds ovoid-cylindric, sub-acute, 0'35 

 0'5 inch long, with reddish brown perulse. 

 Leaves quinate, persistent three four 

 years, clustered round the apical half of each 

 season's growth, slender, 4 5 inches long, 

 trigonal, the margins .obscurely serrulate, 

 the dorsal convex side bright green, the 

 ventral flat sides marked with three 

 five white stomatiferous lines ; basal sheath 

 deciduous, pale brown, 0'75 inch long. 

 Staminate flowers in dense clusters of 

 , twenty thirty or more, immediately below 

 the apex of ' shoots of the preceding year, 

 cyliridric, obtuse, 0*5 inch long, pale yellow, 

 surrounded at the base by eight ten 

 minute involucral bracts in two series. 

 Cones pendent, 6. 8 inches long, sub- 

 cylindric, often curved, tapering to a 

 sub-acute point ; scales obovate-oblong, 

 slightly thickened and striated towards 

 the apex, which is tipped with a sub- 

 quadrangular acute umbo. Seed wings 

 three-fourths of the length of the scale, 

 narrowly oblong, rounded on one side. 



Pinus monticola, Don in Lambert's Genus Pinus, III. t. 87 (1837). London, Arb. et 

 Frut. Brit IV. 2291, with tigs. Forbes, Pinet. Woburn, 81, t. 31. Endlicher, Synops. 

 Conif. 148. Carriere, Traite Conif. ed. II. 401. Parlatore, D. C. Prodr. XVI. 405. 

 Hoopes, Evergreens 135. Gordon, Pinet. ed. II. 314. Engelmami in Brewer and 

 Watson's Bot. Califor. II. 123. Lawson, Pinet. Brit. I. 69, with figs. Sargent in 

 Garden and Forest, V. (1891), p. 1, with fig. ; and Silva N. Amer. X. 26, tt. 540, 

 541. Beissner, Nadelholzk. 293. Masters in Journ. R. Hort. Soc. XIV. 235 



P. Strobus var. monticola, Nuttall, Sylva III. 118 (1849). 



P. porphyrocarpa, * Murray in Lawson's Pinet. Brit. I. 83, with figs. 



* Distinguished from the typical Pinus monticola by its young cones being purple instead 

 of pale green. Known only from a tree cultivated in Scotland. 



Fig. 95. Cone of 

 Pinus monticola. 



