Forest trees of the Pacific slope . I-iG. !)!.— scssilifaUa: a, seed-bearing branch. From mouth of Columbia Uiver, Washington, to southwestern California, rangingthrough western Oregon and western slopes of .Sierras and coast ranges. of streams and moist deprcssioDB. FOEEST TREES OF THE PACIFIC SLOPE. 225 Mackenzie cordiUd UKiil-rnzirana CHARACTERISTICS. Mackenzie willow is a little-known species, probably not now distinguished bylaymen. Slender, straight, from 15 to 18 feet high and from 3 to 5 inches in. Fio. —Sf«?j> cordata
Forest trees of the Pacific slope . I-iG. !)!.— scssilifaUa: a, seed-bearing branch. From mouth of Columbia Uiver, Washington, to southwestern California, rangingthrough western Oregon and western slopes of .Sierras and coast ranges. of streams and moist deprcssioDB. FOEEST TREES OF THE PACIFIC SLOPE. 225 Mackenzie cordiUd UKiil-rnzirana CHARACTERISTICS. Mackenzie willow is a little-known species, probably not now distinguished bylaymen. Slender, straight, from 15 to 18 feet high and from 3 to 5 inches in. Fio. —Sf«?j> cordata mackenzieana: a, fruiting branch ; h, seed pod, enlarged. diameter, with thin, smooth, unl)rnken l)ark of an ashy gray color, and a narrow,rather compact crown of thin branches whicli grow upward. Mature twigs of 226 FOREST TREES OF THE PACIFIC SLOPE. the year aie rather slender, but stiff in appearance, shiny yellow, later beoomiujjgreenish. Mature leaves (tig. iio), from 1| to S{ inches long, are deep yellow-green (paler beneath), smooth on both surfaces; the somewhat scythe-shapedform of the leaves is a notable character. Midveius and stems of the leavesare yellow. Wood, reddish brown, light, soft, and brittle. Longevity.—Not fully determined. Stems from 3 to 5 inches through arefrom to 22 years old. Great Slave Lake and southward (through region along eastern base of Rocky Moun-tains) to northern Idaho and California (Lake County). OCCURRENCE. Borders of mountain streams in rocky and gravelly soil. Climatic and other require-ments undetermined.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectforestsandforestry
