314 NORTH AMERICAN FAUNA. [No. 7. 



along the west side of the valley; and from Mount Magruder to about 

 13,040 meters (0,700 feet) on the southeast side of the valley (northwest 

 exposure), and still lower on northerly exposures. 



Mount Magruder. — Covers the whole Mount Magruder plateau and 

 the hills and peaks that rise from it even to the extreme summit of 

 Mount Magruder itself. On the latter peak it grows in a peculiar way, 

 forming distinct lines that are conspicuous at a distance. These lines 

 are horizontal on the peaks and vertical on the saddles. On the south 

 side of Mount Magruder it descends into Tule CaTion (in the upper 

 part of which it is the prevailing brush) and into the valley between 

 Mount Magruder and Gold Mountain, where it is mixed with Grayia 

 spinosa, Tetradymia glabrata, Atriplex conferUfolia, and other species. 

 On the northwest slope of Mount Magruder it descends to Pigeon Spring 

 (altitude 2,040 meters, or 6,700 feet) and reaches several hundred feet 

 lower on the south side of the canon (north exposure). 



Gold Mountain. — Sagebrush is the prevailing brush on Gold Moun- 

 tain, on the south slope of which it descends to 1,830 meters (6,000 

 feet). 



Timpahute and Desert ranges.— Common along the summit, descend- 

 ing to the divide at Hungry Hill summit, 1,780 meters (5,850 feet), and 

 extending thence southward toward the North Arm of Indian Spring 

 Valley to 1,740 meters (5,700 feet), and northward toward Emigrant 

 Valley to 1,700 meters (5,600 feet). 



Paliranagat Mountains. — Abundant, descending as low as 1,525 meters 

 (5,000 feet) on the east slope (Pahranagat Valley side) at the latitude 

 of the middle of the valley, and still lower in the northern part of the 

 valley. 



Pahroc Mountains. — Common, reaching down to 1,740 meters (5,700 

 feet) or a little lower on the upper levels of Desert Valley. 



Highland range. — Abundant, descending to 1,830 meters (6,000 feet) 

 on the west side (Desert Valley side), and down into the valley of 

 Meadow Creek on the east side, covering the valley excepting the flat 

 bordering the creek. 



Juniper Mountains. — The whole of the high plateau here spoken of as 

 the Juniper Plateau or Mountains, extending from Meadow Creek 

 Valley, Nevada, easterly to and across the western boundary of Utah, 

 is continuously covered with sagebrush mixed with junipers. 



Charleston Mountains. — Abundant throughout the higher parts of 

 the Charleston Mountains, descending on the west slope (Pahrnmp 

 Valley side) to 1,550 meters (5,100 feet). 



UTAH. 



In western Utah the true sage spreads southward continuously, cov- 

 ering the Escalante Desert and Shoal Creek country and Mountain 

 Meadows (which is a true sage plain), and extending south continuously 

 far enough to include the Upper Santa Clara Valley above 1,280 meters 



