Mat, 1893.] SHRUBS OF THE DEATH VALLEY EXPEDITION. 315 



(4/200 feet) altitude, where its southern edge reaches within 13 kilo- 

 meters (8 miles) of the town of St. George. To the west it ranges con- 

 tinuously over the Juniper Plateau to Meadow Creek Valley as already 

 mentioned, and reaches southward, along the Beaverdam Mountains, 

 descending to 1,340 meters (4,400 feet) on the west (Arizona) slope and 

 to 1,100 meters (3,600 feet) on the east (Utah) slope. 



Artemisia spine sc ens. 



This compact little species is abundant on many of the higher valleys 

 and slopes of the desert region in the southern part of the Great Basin, 

 in California and Nevada. The following notes on its distribution 

 were recorded : 



CALIFORNIA. 



Walker Pass. — Found on the summit at an altitude of 1,830 meters 

 (5,100 feet). 



Deep Spring Valley. — Common, in company with Menoclora spinosa, 

 Grayia spinosa, Eurotia lanata, Dalea frem'onti, D. polyadenia, Lycium 

 andersoni, and Tetradymia spinosa. 



Panamint Mountains. — Common in many parts of the range. The 

 little basin between Wild Bose Spring and Emigrant Canon, named 

 'Perognathus Flat' by our expedition, is covered with this species, 

 very pure and little mixed with other plants. 



NEVADA. 



Fish Lalce Valley. — Abundant, covering the flat on the east side of 

 the valley in company with Eurotia lanata, and ranging thence up on 

 the northwest slope of Mount Magruder nearly to Pigeon Spring (alti- 

 tude 2,040 meters or 6,700 feet). 



Valley between Mount Magruder and Gold Mountain. — Not abundant, 

 but found in company with Artemisia tridentata, Grayia spinosa, Atri- 

 plex confertifolia, and Tetradymia glabrata. 



Grapevine Canon. — Tolerably common in the upper part of the 

 canon. 



Sarcobatus Flat. — Common in northern part. 



Oasis Valley. — Common in the upper part of the valley above 1,220 

 meters (4,000 feet) and ranging thence westerly. 



Emigrant Valley. — One of the commonest plants of the bottom (alti- 

 tude a little above 1,525 meters or 5,000 feet), and ranging thence 

 easterly up on the Timpahute Mountains to 1,680 meters (5,500 feet). 



Timpahute Valley. — One of the principal plants. 



Pahranagat Valley. — Common on the higher levels above 1,220 meters 

 (4,000 feet). In places on the west side of the valley it reaches 2,440 

 meters or 5,300 feet (on the east slope of the Pahranagat Mountains). 



Desert Valley. — The dominant plant in the gravelly soil surrounding 

 the dry lake. 



Meadow Greek Valley. — Common below 1,770 meters (5,800 feet), on 

 the west shype of the Juniper Plateau. 



