336 NORTH AMERICAN FAUNA. [No. 7. 



Pahrump Valley. — Common, reaching its upper limit on the east side 

 (west slope of Charleston Mountains) at 1,370 meters (4,500 feet). 



Pahranagat Valley. — Common everywhere on the gravel slopes. 



Indian Spring Valley. — Common in the north arm. 



Sareobatm Flat. — Tolerably common in places. 



Grapevine Canon. — Found in the bottom of the canon. 



Emigrant Valley. — Common and ranging well up on the west slope of 

 the Desert Mountains. 



UTAH. 



Beaverdam Mountains.— Found on the west slope of the Beaverdam 

 Mountains up to 1,340 meters (4,400 feet), and on the east slope up to 

 1,100 meters (3,600 feet). 



Santa Clara Valley.— Occurs sparingly in the lower part of the valley. 



Ephreda viridis Coville. 



This green Ephedra does not occur in any of the Lower Sonoran des- 

 erts, but grows on the mountain sides and plateaus of the Upper Sono- 

 ran and Transition zones with sagebrush (Artemisia tridentata) and 

 juniper (Jimiperus californica utahensis). The following notes on its 

 distribution were recorded : 



CALIFORNIA. 



Mohave Desert. — Tolerably common at the summit of Cajon Pass and 

 thence along the north base of the San Bernardino Mountains, in the 

 juniper belt. 



Walker Pass. — On the east slope of Walker Pass this species begins 

 at 1,430 meters (4,700 feet) with Artemisia tridentata and ranges up; 

 on the west slope it is common between 1,250 and 1,400 meters (4,100 

 and 4,600 feet). 



Sierra Nevada. — Common on the east (Ow T ens Valley) slope from 2,750 

 meters (9,000 feet) or higher, down to 1,830 meters (6,000 feet) j and 

 still lower in places on the Alabama Range. 



White Mountains. — Rather common along the summit. 



Panamint Mountains. — Common on the higher parts of the range. 



In the basin above Wild Rose Spring it begins above Coleoggne at 

 2,740-2,980 meters (6,300-6,500 feet) and runs up to the summit at the 

 west base of Telescope Peak, altitude 2,560 meters (8,400 feet). 



NEVADA. 



Mount Magruder. — Common over the higher parts of the mountain, 

 ranging all the way up to the summit of the main peak with Artemisia 

 tridentata; occurs also in the upper part of Tule Canon. 



Gold Mountain. — Common on the summit and ranges down on the 

 south slope to 1,830 meters (6,000 feet) with Artemisia tridentata. 



Pahranagat Mountains. — Tolerably common. 



Highland Range, — Occurs. 



