

CATALOGUE OF SPECIES. 183 



slopes of the Charleston Mountains, beginning at 1,280 meters; west of Amargosa, in 

 the Funeral Mountains, from 1,100 meters to the summit, searce at the lower altitude; 

 on the divide between Pahrump ;md Ash Meadows; in the northern part of Vegas 

 Valley; in Johnson, Willow Creek, and Mill Creek canons, Panamint Mountains; 

 near Crystal Spring, Coso Mountains; between Lone Pine and Olancha; near the 

 mouth of Tehachapi Pass; and on the desert between Mohave and Willow Spring. 

 It was eollected by Mr. Bailey at Quartz Spring, Nevada (No. 1988). In the region 

 examined the plant is widely scattered over the upper part of the Larrea belt, but 

 extends also into the Upper Sonoran. Dr. Merriiim reported it also in Deep Spring 

 Valley, California; in Fish Lake Valley, Sarcobatus Flat, Oasis Valley, Emigrant 

 Valley, Timpahute Valley, Pahroe Plain, Desert Valley, Meadow Creek Valley, and 

 Juniper Mountains, Nevada; and in the valley of the Santa Clara, Utah. 



NitroprnIaoccidentalis(Moq.) inDC. Prodr. xiii.pt. ii. 279(1849), under Banalia; 

 Wats. Bot. King Snrv. 297 (1871). Type locality, "in Oregon." 



This plant, characteristic of moist, alkaline soil, was observed at Saratoga Springs 

 (No. 1875); at Resting Springs; at Ash Meadows; on the shores of Owens Lake, 

 near Keeler; between Little Owens Lake and Walker Pass ; between Tejon Eanch 

 and Bakersfield; and near Visalia. 



Kochia americana Wats. Proc. Amer. Acad. ix. 93 (1874). Type locality, "foot- 

 hills and valleys from Northern Nevada to Southern Wyoming and southward to Ari- 

 zona and Southern Colorado." 



Between Keeler and Darwin (No. 905). 



Kochia califomica Wats. Proc. Amer. Acad. xvii. 378 (1882). Type localities, 

 "ncarCoIton, and at Rabbit Springs, San Bernardino County," California. The first 

 of these two localities is undoubtedly incorrect. 



At Ash Meadows, Nevada (No. 309 J. The species has been found before only in 

 the State of California. 



Allenrolfea occidentalis (Wats.) Bot. King Surv. 293 (1871), under Halostachys; 

 Kuntze,Rev. Gen. PL 546(1891). Type locality, "about Great Salt Lake [Utah] and in 

 alkaline valleys westward to the sinks of the Carson and Humboldt rivers," Nevada. 



As pointed out by Kuntze, 1 the name Spirostachys was originally applied by 

 Ungern-Sternbcrg " to a plant of the Argentine Republic, but this name was after- 

 wards 3 changed by the same author to Heterostaehys. The name Spiroataehys there- 

 fore reverts to this Argentine plant, and Watson's Halostachys occidentalis, which he 

 afterward 4 changed to Spiroataehys occidentalis, was left, together with, two South 

 American species, without a generic name. This Dr. Kuntze has supplied. 



This plant was first seen by the expedition at the southern end of the salt-marsh in 

 Death Valley when we entered it January 20, 1891. At this jioint the plant grows 

 in patches upon hummocks of mixed sand and clay. Some of the larger hummocks 

 are 1 meter high and 3 to 7 meters long, extending in a northerly and southerly 

 direction, corresponding with the prevailing winds. They are undoubtedly formed by 

 the drifting of sand among the branches of the Allenrolfea and the subsequent 

 higher growth of the plant. Throughout the border of the salt-marsh in Death 

 Valley the plant is abundant, and forms the characteristic line of extreme vegeta- 

 tion. Opposite Bennett Wells it grows uniformly over the ground, not in hum- 

 mocks, for at this point there is no drifting sand. On the east side of the valley the 

 gravel slopes at most points come directly down to the salt-marsh, and, in such situa- 



■Rev. Gen. PI. 545, 546 (1891). 

 3 Vers. Syst. Salicorn. 100 (1866). 

 "Atti Congr. Bot. Firenz. 273 (1876), 

 *rroc. Amer. Acad. ix. 125 (1874). 



