Forest trees of the Pacific slope . ntainousone. Very commonly a slender-stemmed, shrub-like tree from 10 to 15 feet high(in dense thickets), but sometimes from 25 to 30 feet high and from G to 10inches through. The deep, shiny, old-copper-colored bark of the trunks dis-tinguishes it from other asociated trees. The thinly foliaged crown is composedof very slender branches with delicate pendent twigs. When young the twigsare gi-eenish and more or less thickly covered with i-esinous, shiny dots (glands),which disappear gradually in one or two seasons, during which the twigsbecome deep red-brown
Forest trees of the Pacific slope . ntainousone. Very commonly a slender-stemmed, shrub-like tree from 10 to 15 feet high(in dense thickets), but sometimes from 25 to 30 feet high and from G to 10inches through. The deep, shiny, old-copper-colored bark of the trunks dis-tinguishes it from other asociated trees. The thinly foliaged crown is composedof very slender branches with delicate pendent twigs. When young the twigsare gi-eenish and more or less thickly covered with i-esinous, shiny dots (glands),which disappear gradually in one or two seasons, during which the twigsbecome deep red-brown or copper-brown and more and more shiny. Matureleaves (fig. 114), resinous dotted at first, are smooth, except for numerous dotson the lighter green under surfaces; leaf stems also with glandular specks andminute hairs. Fruiting cones (fig. 114), ripe in early summer, about seven- FOREST TREES OF THE PACIFIC SLOPE. 261 eighths inch to IJ inclies lono-• tim n,!,,,,^^^ Miry at the top end (fig. mV.) ^^^-^--^-d seeds (nuts) minutely. Fig. lU,-^Betiila fontinnJis: a fruitino- t^-\„. 7 , . o, nuiting t^ig, h, seed, twice natural size; c, cone scaletwice natural size. 262 FOREST TREES OF THE PACIFIC SLOPE. to the small size of the trees, too little of the wood is available for commer-cial use. Its dense thickets bordering rocky canyon streams and in gulches are veryhelpful conservers of the scanty water supply in its range. Longevity.—Records of the ages attained by large trees are not stems indicate rapid height and diameter growth; those from .S to Ginches in diameter are from 18 to .30 years old. Further investigation of lon-gevity is desirable. RANGE. British Columbia and probably Yukon and southward into Colorado, possibly tonorthern New Mexico, southern Ttah, Nevada, and central California ; westward to eastside of Pacific coast and Cascade ranges of Canada, Washington, and Oregon : east sideof northern California coast mountains and east side of Sierras o
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectforestsandforestry
