Forest trees of the Pacific slope . masseil inlow thickets, with the flue, exceedingly stiff twigs and branches closely California coast island representatives grown in sheltered places are from20 to feet high and from S to 12 or more inches in diameter, with scaly brownbark; while the bark of the scrub forms is scaly and light ashy-gray. Thetwigs, so rigid as to seem thorny to one penetrating a thicket, are branched atvery abrupt angles. No adequate statement can be made of the size or formcharacters of the leaves and acorns, types of which are figured as fully as pos-sible in
Forest trees of the Pacific slope . masseil inlow thickets, with the flue, exceedingly stiff twigs and branches closely California coast island representatives grown in sheltered places are from20 to feet high and from S to 12 or more inches in diameter, with scaly brownbark; while the bark of the scrub forms is scaly and light ashy-gray. Thetwigs, so rigid as to seem thorny to one penetrating a thicket, are branched atvery abrupt angles. No adequate statement can be made of the size or formcharacters of the leaves and acorns, types of which are figured as fully as pos-sible in fig. 131. FOKEST TREES OF THE PACIFIC SLOPE. 293 The best marked variety is Qaercus dumosa revoluta Sargent, to be lookedfor especially in the northern and southern range of the species. It is distin-guished by its strongly rolled or curled leaves, more or less coated with whitishhairs, and with prickly borders; the curled edges are turned toward the undersurface of the leaf. Leaves of a seasons growth adhere to the branches until. Fig. 131.—Quercus dumosa. the succeeding spring, and begin to fall as the new leaves are formed. Acornsare matured in one season. Wood light brown, hard, brittle; of uo commercial use. The species useful onlyin assisting, with other desert hill shrubs and small trees, in forming a protectivecover on the too scantily clothed dry slopes. Its strong roots go deep Into rocky 294 FOREST TREES OF THE PACIFIC SLOPE. crevices and seud up sprouts year after year, provided that the tliin stems arenot too severely burned. Longevity.—Not fully determined. A single stem 4i inclies through shows anage of 20 years. RANGE. Central California to Lower California. Chaparral belt of foothills from centralSierras and of coast ranges in Mendocino County and Trinity Mountains, southward tonorthern Lower California; also on islands off southern (alifornia, here, only, becominga tree of any considerable size. Californi.\.—Common scrub oak of southern coast ranges, th
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