Mat.1803.] SHRUBS OF THE DEATH VALLEY EXPEDITION. 291 



NEVADA. 



Fish Lalce Valley. — Not found in the bottom of the valley, but tolera- 

 bly common on tbe southeast side up to an altitude of 1,950 meters 

 (0,400 feet) in a wash leading up towards Pigeon Spring, on the north- 

 west slope of Mount Magruder. 



Grapevine Canon. — Occurs in the upper part of the canon. 



Sarcobatus Flat. — Tolerably common in places in the northern part of 

 the flat. 



Oasis Valley. — Occurs sparingly. 



Pahranagat Valley. — Common in xflaces, rangiug up to about 1,525 

 meters (5,000 feet) on the west side of the valley. m 



Isomeris arborea. 



The hills at the head of Antelope Valley, at the extreme west end of 

 the Mohave Desert (altitude 1,160 meters, or 3,800 feet) were dotted 

 with clumps of Isomeris, bearing yellow flowers and large inflated pods,, 

 the last week in June. It was abundant in a wash leading south from 

 this point toward Peru Creek, and was found also in the lower part of 

 the open canon leading from Mohave up to Tehachapi. 



Isomeris arborea globosa.* 



This new subspecies of Isomeris was described by Mr. Coville from 

 specimens collected near Calieute, at the head of the San Joaquin 

 Valley, California, where Ave found it common along Caliente Creek, a 

 few miles east of the station, June 24, 1891. 



Krameria parvifolia. 



This small and scrubby bush is very characteristic of the lower Sono- 

 ran deserts, but is not so generally distributed as some other species — 

 notably Larrea and Franseria. It flowers profusely throughout the 

 month of May, when it is literally buried in a mass of fragrant violet- 

 purple blossoms. During the latter part of the month its spiny berries 

 begin to show before it is wholly out of flower. During the remainder 

 of the year it is easily mistaken for Goleogyne, though growing at a lower 

 altitude. The following notes on its distribution were recorded : 



NEVADA. 



Pahrump Valley. — Commpn on the east side of the valley, ranging up 

 to 1,340 meters (4,400 feet) on the west slope of the Charleston Mountains. 



Indian Spring Valley. — Common throughout the valley, reaching up 

 in the North Arm amongmost of the Larrea areas. It was still inflower 

 in Indian Spring Valley May 29, and in fruit the same date in the 

 Amargosa country. 



Pahranagat Valley. — Common on gravel soil, where it is mixed with 

 Grayia, Lycium, Larrea, and Dalea. In a wash leading from Pahroc 

 Plain to Pahranagat Valley it occurs as high as 1,310 meters (4,300 

 feet) in company with Franseria dumosa (still in bloom May 22-20). 



Proc, Biol. Soc. Wash., vol. vn, May 18, 1892, p. 73. 



