

CATALOGUE OF SPECIES. 65 



it occurs locally for 2[00] or 300 miles further up the river, so that it appears only to 

 occupy a limited belt which traverses the Missouri." 



Specimens of No. 723, as well as those collected in California in general, have pin- 

 natilid leaves, while entire leaves arc often borne upon the same stem, and some- 

 times, as in a portion of No. 287, a plant boars entire leaves only. The suflrutescen. 

 base of the stem sometimes attains a diameter of more than 2 em. 



The species was found in Paradise Valley ; in the northern part of Besting Springs 

 Valley (No. 287); near Winter's ranch, Pahrump Valley; near Devil Hole, Ash 

 Meadows; at several points in Vegas Valley ; in Surprise Canon, Panamint Moun- 

 tains (No. 723) ; between Keeler and Crystal Spring; between Lone Pine and Olaucha; 

 along Canebrake Creek, on the west slope of Walker Pass; in Tehachapi Canon; 

 and in Antelope Valley. Dr. Merriam has recorded it also in the northern part of 

 Owens Valley and in Deep Spring Valley, California ; and in Fish Lake Valley, Grape- 

 vine Canon, Sarcobatus Flat, Oasis Valley, and Pahranagat Valley, Nevada. 



Tropidocarpum gracile Hook. Ic. PL i. t. 43 (1837). Type locality, "Monterey, 

 California." 

 Near San Bernardino (No. 30). 



Brassica nigra (L.) Sp. PL ii. 008 (1753), under Sinapia; Koch In , Rcehl. Deutschl. 

 Fl. ed. 3. iv. 713 (1833.) Type locality European. 



A mustard plant, probably of this species, was seen near a camping spot in the 

 lower part of Surprise Canon, Panamint Mountains. 



Bursa divaricata (Nntt.) in Tore. & Gr. Fl. i. 117 (1838), under ITymenolofois; 

 Knntze, Eev. Gen. PL i. 21 (1891). Type locality, "shady grassy plains of the 

 Oregon, near the junction of the Wahlamet." 



In the Panamint and Coso Mountains (Nos. 810, 928). The leaves are almost always 

 entire, rarely with a single tooth on one side. 



Bursa pastoris (L.) Sp. PL ii. 647 (1753), as ThJaspi bursa pasforis; Wigg. 

 Prim. Fl. Hols. 47 (1780). Typo locality European. 



A few specimens of this weed were seen at Summit Station, on the freight road 

 between Mohave and Searles's borax establishment. 



Lepidium flavum Torr. Pac. R. Rep. iv. 67 (1857). Type locality, "sandy places 

 near the Mohave creek." 



At Ash Meadows; in Vegas Valley, between Vegas Ranch and Corn Creek; and in . 



Shepherd Canon (No. 734). 

 Lepidium fremontii Wats. Bot. King Surv. 30 (1871). Type locality, "on the 



Mohave River." 



This suffrutoscent perennial occurred abundantly over a large part of the desert. 

 It was recorded between Stoddard Wells and Daggett (No. 130) ; in the desert, just 

 north of Daggett ; in Paradise Valley ; at the extreme southern end of Panamint 

 Vallev ' at Lone Willow Spring, and on the mountaiu sides above ; at various points 

 . in Resting Springs (No. 285) and Pahrump valleys; in the higher altitudes of the 

 Funeral Mountains, west of Amargosa; between Furnace Creek and Ash Meadows; 

 between the latter point and Pahrump; in Vegas Valley ; in the Vegas Wash; on 

 both slopes of the divide northwest of Towner'B; in Johnson, Surprise (No. 612), , 

 and Willow Creek canons, Panamint Mountains; at several points along the road 

 from Hot Springs to Mohave; in a canon near Swansea; between Keeler and Crystal 

 Spring; near Lone Pine (No. 891); in Tehachapi Pass; and on the Mohave Desert 

 between the last point mentioned and Willow Spring. The species is characteristic 

 of the upper altitudes of the Lower Sonoran zone, seldom growing below 2,000 feet, 

 aiid rarely, as at Lone Pino, growing above the Larrea belt. 



13095— No. 1 5 



