. Handbook of the trees of the northern states and Canada east of the Rocky Mountains, photo-descriptive . Trees. FTANnBOOK OF Trees of the JSToetheen States and Canada. 29 The Black Spruce in forest growth, where â climate and conditions are most favorable, is found sometimes attaining the height of 80- 100 ft., with a trunk 2-3 ft. in diameter, but such conditions are only found in regions north of the United States where the climate is too severe for the endurance of most of our trees. This tree with the Tamarack marks the limit of tree growth in the far north and «itends in range nearly a
. Handbook of the trees of the northern states and Canada east of the Rocky Mountains, photo-descriptive . Trees. FTANnBOOK OF Trees of the JSToetheen States and Canada. 29 The Black Spruce in forest growth, where â climate and conditions are most favorable, is found sometimes attaining the height of 80- 100 ft., with a trunk 2-3 ft. in diameter, but such conditions are only found in regions north of the United States where the climate is too severe for the endurance of most of our trees. This tree with the Tamarack marks the limit of tree growth in the far north and «itends in range nearly across the continent, growing alike on bottom-lands and mountain slopes. Within the limits of the United States, however, conditions seem to be less iavorable. Here it is confined to low bottom- lands, sphagnum swamps and the margins of ponds, where its dwarfed and picturesque "narrow forms with gracefully curved branches and bluish green foliage are pleasing and characteristic features. It is found even growing to great age in the floating bogs about the shores of small lakes in northern Minne- sota and producing cones in abundance, even though no more than 2 or 3 ft. in height. The wood of the Black Spruce is light, a cu. ft. weighing lbs., soft and useful for paper pulp and lumber when of sufficient Considerable spruce gum is akso derived from this tree. Leaves usually y^-V2 in. long, crowded and more or less curved, stiff and with sharp callous tips, "blue-green with numerous stomata above a:]d fewer beneath : branchlets pubescent. Flowers: staminate oblong with reddish anthers ; pistillate oblong with thin reflexed scales and rounded erose bracts. Fruit: cones ovate, persisting often 2 or more seasons, strongly reflexed upon the branch- lets, %-XV2 in. long,'narrowing to a strongly in- <!urved stalk, with scales rounded and more or Ipss ernse-dentate at anex; seeds about Vs in. InT with ample pale brown wing widest above the middle. 1. Syn. P. i
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