. Contributions from the Hull Botanical Laboratory. Plants. 154 BOTANICAL GAZETTE [SEPTEMBER *k. Fig. i.—Map of southern Rocky Mountains, except westernmost ranges; mountain areas shaded; names of areas indicated by numbers are: i, Laramie Mountains; 2, Medicine Bow Range; 3, low mountain area connecting Laramie and Front ranges; 4, foothills of Poudrc River area; 5, Front Range; 6, Rampart Range; 7, Pike's Peak highland; 8, Park Range; 9, Saguache Range; 10, Upper Arkansas Valley (between 9 and 8); 11, low mountains; 12, Wet Mountain Valley; 13, Sangre de Cristo Range; 14, Wet and Greenhorn m
. Contributions from the Hull Botanical Laboratory. Plants. 154 BOTANICAL GAZETTE [SEPTEMBER *k. Fig. i.—Map of southern Rocky Mountains, except westernmost ranges; mountain areas shaded; names of areas indicated by numbers are: i, Laramie Mountains; 2, Medicine Bow Range; 3, low mountain area connecting Laramie and Front ranges; 4, foothills of Poudrc River area; 5, Front Range; 6, Rampart Range; 7, Pike's Peak highland; 8, Park Range; 9, Saguache Range; 10, Upper Arkansas Valley (between 9 and 8); 11, low mountains; 12, Wet Mountain Valley; 13, Sangre de Cristo Range; 14, Wet and Greenhorn mountains; 15, Huerfano Park; 16, southern sedimentary plateau; 17, Culebra Range; 18, Spanish Peaks highland; 19, Raton mesas. While in general the plains and mountains contrast rather sharply at their junction, this is not always true; the moun- tain-front is a transition zone in places a number of miles broad rather than a line. It is not determined alone by alti- tude, by topography, by char- acter of the bedrock, or by climate; it is the resultant of all of these. For the sake of clearness the foothills may be described as the drier and less elevated (about 5800-8000 ft.) part of the mountain plateau, with vegetation composed of grassland, scattered rock pines, and a few other trees (foothill zone, Ramaley 8). Except in the southern " sedimentary pla- teau" (fig. i), perhaps rather to be considered part of the mountain-front area, the foot- hills may be said to comprise the granitic hills of the mountain- mass proper; while to the mountain-front zone may be assigned the upturned sedimen- tary hogbacks and longitudinal valleys, sedimentary outcrops, buttes and broken plateaus, and the mesas and upper parts of the debris-covered slope to the plains. The vegetation is of the greatest variety. The plains proper may be said to com- mence where the mixed soil and. Please note that these images are extracted from scanned page images that may have been digitally enhance
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1895
