316 NORTH AMERICAN FAUNA, [So. 7. 



Artemisia arbuscula. 



This sage, which grows at greater elevations than most species, was 

 found in Nevada on the summit of the Pahranagat Mountains and on 

 Mount Magruder. 



Artemisia filifolia. 



This species was rare in the region traversed, but was found cover- 

 ing a large flat near St. George in the Lower Santa Clara Valley, Utah. 

 It differs widely from the other species of the genus, its long linear or 

 filiform whitish leaves giving it a peculiarly soft and beautiful appear- 

 ance. 



Peuceapliyllum schottii. 



This large shrub, resembling a Bigelovia in general aspect, was found 

 in many of the dry washes on the lower parts of the desert ranges and 

 in some of the higher valleys. It is common in Owens Valley, Califor- 

 nia, where it ranges up on the east slope of the Sierra to 1,550 meters 

 (about 5,100 feet). On the opposite side of the valley it reaches up on 

 the west slope of the White Mountains to about 1,980 meters (6,500 

 feet). It is common also on the Panamint Mountains, California, in 

 the Muddy Mountains, Nevada, and in many other localities. 



Tetradymia canescens. 



This species is common on many of the higher levels, particularly on 

 the desert ranges. In Nevada it was common on Mount Magruder; in 

 the upper part of Pahranagat Valley; in the Juniper Mountains 

 (between Meadow Creek, Nevada, and the Escalante Desert, Utah) ; and 

 in Utah in the upper part of the Santa Clara Valley (mixed with the 

 true sage brush, Artemisia tridentata). 



Tetradymia glabrata. 



This fine species was not seen in the southern deserts traversed in 

 going from Panamint and Death valleys across southern Nevada to 

 Utah, but was found in a number of places on the return trip, which 

 was a little further north and covered higher ground. Before going to 

 seed it may be easily recognized by its deep-green cylindrical branches, 

 which are nearly vertical. It was found between the east slope of the 

 Sierra in Owens Valley, California, and Meadow Creek Valley, Nevada, 

 in the following. localities: 



CALIFORNIA. 



Owens Valley. — Common, ranging up to 1,550 meters (5,100 feet) on 

 the west slope. 



NEVADA. 



Valley hetween Gold Mountain and Mount Magruder. — Occurs spar- 

 ingly in this valley with Artemisia tridentata, Grayia spinosa and other 

 brush. 



Grapevine Cafwn. — Found in the upper part of the canon. 



