May, 1893.] SHRUBS OF THE DEATH VALLEY EXPEDITION. 299 



.NEVADA. 



Fish Lake Valley.- -Common in the southeast corner of the valley, 

 whence it ranges up to an altitude of 1,765 meters (5,800 feet). 



Gold Mountain. — Common on the north slope of Gold Mountain a 

 little below 2,135 meters (7,000 feet) in altitude. 



Indian Spring Valley. — Common in the Larrea in the north arm of 

 Indian Spring - Valley. 



Pahranagat Valley. — This large blue -flowered species was found in 

 company with the small purple-flowered Dalea polyadenia, and with 

 Coleogyne ramosissima, on the gravel divide at the extreme south end of 

 the valley, south of Pahranagat Lake, at an altitude of 1,155 meters 

 (3,800 feet). Like Coleogyne, it stops about half a mile north of this 

 divide and does not occur in Pahranagat Valley proper. It does occur, 

 however, also in eompany with Coleogyne, on the west side of the valley 

 on the gavel slope at the east foot of the Pahranagat Mountains, be- 

 tween 1,280 and 1,370 meters (4,200 and 4,500 feet), but is rather scarce 

 there. It was in full flower May 22-20. 



Dalea johnsoni. 



Specimens of the large and showy Dalea jo hnsoni were collected near 

 St. George, in the Lower Santa Clara Valley, Utah; and the species 

 was common from the Santa Clara Valley (altitude 970 meters, or 3,200 

 feet) up to 1,090 meters (3,600 feet) on the east slope of the Bea Verdana 

 Mountains. 



Robinia neomexicana. 



This dwarf locust was found in the Santa Clara Valley, in Utah, and 

 thence up along the east slope of the Beaverdam Mountains to 1,040 

 meters (3,400 feet), but was not observed elsewhere. 



Cassia arniata. 



This handsome Cassia was found flowering abundantly at the Great 

 Bend of the Colorado .River (May 4), in Leach Point Valley (Aj)iil 25), 

 and near the south end of Death Valley (April 26). 



Cercis occidentalis. 



The Judas bush was found in but one spot in the Great Basin, namely, 

 the Charleston Mountains, Nevada, where Mr. Bailey and I found it 

 flowering in profusion in a rocky caiion a little east of Mountain Spring, 

 April 30. The seed pods of the previous year were still clinging to the 

 branches, together with the handsome red flowers. On the west slope 

 of the Sierra Nevada, in California, it was found in Kern Valley as low 

 down as 820 meters (2,700 feet) on northerly exposures. 



Prosopis juliflora. 



The two species of mesquite are commonly ranked as trees and are the 

 only trees besides cottonwoods that inhabit the arid Sonoran deserts of 

 the Great Basin. The cottonwoods are never found except near water; 

 the mesquite, on the other hand, occur at long distances from visible 



