Forest trees of the Pacific slope . ; shrubby in dry, poor soils. Forms dense thickets of puregrowth ; often more or less scattered, singly or in clumps, with Douglas fir, red andmountain alders, aspen, black cottonwood, mountain maple, western serviceberry, Ittttercherry, chinquapin brush, and occasionally yellow pine. Climatic Conditions.—Similar to those of red alder and aspen. Tolerance.—Undetermined, but apparently intolerant of shade at any time, as shownby its slender stems and small crown In dense stands, where it struggles for top light. Reirodihtion.—Very ainindant seeder nearly ever
Forest trees of the Pacific slope . ; shrubby in dry, poor soils. Forms dense thickets of puregrowth ; often more or less scattered, singly or in clumps, with Douglas fir, red andmountain alders, aspen, black cottonwood, mountain maple, western serviceberry, Ittttercherry, chinquapin brush, and occasionally yellow pine. Climatic Conditions.—Similar to those of red alder and aspen. Tolerance.—Undetermined, but apparently intolerant of shade at any time, as shownby its slender stems and small crown In dense stands, where it struggles for top light. Reirodihtion.—Very ainindant seeder nearly every year. Seedlings plentiful in moistlitter, and advancing rapidly in old burns among willow-weed and low herbage. FOBEST TBEES OF THE PACIFIC SLOPE. 359 Hollyleaf ilicifolia (Nutt.) CHAR-\CTEEISTIC«. Hollyleaf cherry is the most distinct of Pacific cherries on acoonnt of itserergr^n hoUy-like foliage (fig. lOSl. Locally known as islay. Spanishwild cherry. and Mountain evergreen cherry. I I. Fig. 16S.—PrunuJi ilicifolia. Mo?t often a dense, prickly ghmb from 2 to 4 feet high on dry. rocky slopes,bnt in sheltered canvons sometimes from 20 to 25 feet high and from 10 to 12inches through: as a tree, more often about 10 feet high, with a very thickly 360 FOKEST TREES OF THE PACIFIC SLOPE. hranchod crown and only a short trunk. The deop refldish-brown bark oflarge trunks is deeply furrowed and cut into litth» siiuarisli divisions. Thesmall twigs are smooth, reddish yellow to red brown. Matui-e leaves (fig. 168),thick, leathery, glossy deep green on their top sides, and much lighter greenbeneath; marginal teeth prickly. Leaves of a seasons growth remain on the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectforestsandforestry
