. Wild flowers and trees of Colorado. Botany. FOREST FORMATIONS AND FOREST TREES 4i feet above the sea, is the upper limit of tree growth, although some shrubby willows occur in the alpine zone above. As noted in the preced- ing pages, the trees of the plains are to be found only along water courses or. on the pine ridges of the high divides between streams. In the following table the general distribution of each tree is stated in relation to the continental divide, which extends north and south through the. Fig. 37.—Rock Pines Lower limit of tree growth on mesas and foothills. Young sumacs in
. Wild flowers and trees of Colorado. Botany. FOREST FORMATIONS AND FOREST TREES 4i feet above the sea, is the upper limit of tree growth, although some shrubby willows occur in the alpine zone above. As noted in the preced- ing pages, the trees of the plains are to be found only along water courses or. on the pine ridges of the high divides between streams. In the following table the general distribution of each tree is stated in relation to the continental divide, which extends north and south through the. Fig. 37.—Rock Pines Lower limit of tree growth on mesas and foothills. Young sumacs in the fore- ground. Late winter. state, dividing it into nearly equal parts. It will be noticed that nearly all of the trees occur both east and west of the divide, somewhere in their distribution. As a matter of fact the same species does not necessarily occur at opposite points east and west of the main range. Those oaks, for example, which are present in the northwestern part of the state do not cross to the foothills of the eastern slope in northern Colorado but. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ramaley, Francis, 1870-1942. Boulder, A. A. Greenman
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1909
