Forest trees of the Pacific slope . 4G.—Abies irnusta, leader. from Kings City to Los Burros Mines; 200 trees on north slope of Beur Basinside of range south of Los Burros Mines and near Punta Gorda. OCCURRENCE. In cool, often narrow, moist canyon bottoms and their lower slopes, usually on northand west exposures; also ih narrow gulches and at heads of ravines. Largest trees 124 FOREST TREES OF THE PACIFIC SLOPE. on west slopes, in deep ravines opening toward the sea; smaller or stunted higherup in more exposed places. Iorous, rocky, gravelly, and sandy soils ; where best growthoccurs, soil Is
Forest trees of the Pacific slope . 4G.—Abies irnusta, leader. from Kings City to Los Burros Mines; 200 trees on north slope of Beur Basinside of range south of Los Burros Mines and near Punta Gorda. OCCURRENCE. In cool, often narrow, moist canyon bottoms and their lower slopes, usually on northand west exposures; also ih narrow gulches and at heads of ravines. Largest trees 124 FOREST TREES OF THE PACIFIC SLOPE. on west slopes, in deep ravines opening toward the sea; smaller or stunted higherup in more exposed places. Iorous, rocky, gravelly, and sandy soils ; where best growthoccurs, soil Is moist, even in summer, from contiguo\is stream bed. Probably capable of forming, under favorable conditions, pure or nearly pure now known—doubtless greatly thinned and checked by fires—only small groups andstraggling lines occur, associated more or less with canyon live oak, broadleaf maple,white alder, California laurel, madrona, and somewhat less often or remotely withtanbark oak, Douglas fir, and Coulter Fig. 47.—Ahics : «, cone ; ?>, cone scale; c, seed. Climatic conditions.—Temperature in its habitat .seldom goes to zero or above100° F. On exposed contiguous slopes, crests of ridges, where possibly this tree oncegrew, seasonal range of temperature is somewhat greater. Moisture laden west windsmaintain fairly high degree of atmospheric humidity during most of the year. Annualprecipitation, almost entirely rain, varies between 20 and 50 inches. Snowfall of theregion, light even at high altitudes. Tolerance.—Very little is known of its shade endurance. Appears to endure consid-erable shade throughout life, particularly in early growth. Bears dense side shade, asshown by retention by old trees of vigorous lower branches in deep shade ; full overheadlight is doubtless required for best growth. FOREST TREES OF THE PACIFIC SLOPE. 125 Reproduction.—A moderately prolific seeder, but apparently cones are produced onlyat rather long inter
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectforestsandforestry
