45 



aiice, but in flower only at that time. This is the only truly 

 shrubby species of the geniis in our flora. Originally found by 

 Fremont "on the Mohave River, a point probably 50 miles south 

 of Randsburg. 



Lepidium montanum Nutt.; T. & G. Fl. N. A. 1: 116. 1838. 

 No. 8068, collected June 19, in the Shasta valley near Gren- 

 ada station. The plants were prostrate or nearly so, many stems 

 spreading in a mat-like mass. It does not agree altogether with 

 the original, but is nearer it than any of the other species. The 

 type came from "plains of the Rocky Mountains, on the western 

 side to the borders of the Oregon." 



Lepidium nitidum Nutt.; T. & G. Fl. N. A. 1: 116. 1838. 



No. 7562, collected March 21, in low moist ground at 

 Marysville, Sutter county. The stems are glabrous or nearly 

 so, the outer ones decumbent at base, then erect. The type was 

 obtained by Nuttall "near St. Barbara." 



No. 7760, collected April 24, at the foot of the mountain 

 about three miles southwest of Mojave, Kern county, growing in 

 gravel. Here it was prostrate, only the middle stems ascending, 

 all rather stout for the size of the plant, decidedly pubescent, as 

 are also the pedicels. It is abundant in the desert, at least near 

 Mojave, and on the dry plains about Bakersfield. 



RoRiPA PALUSTRis (L.) Bess. Enum. 27. 182 1. 



Sisynnbriiin a77iphibi2i7ii \^x. palustre L. Sp. PI. 657. 1753. 



Nnstuj'tiiiin terrestre R. Br. in Ait. Hort. Kew\ Ed. 2, 4: 

 no. 1812. 



Nasturtium palustre DC. Syst. *i\ 191. 1821. 



No. 7595, collected April 6, about a mile west of Bakers- 

 field, Kern county, along the Santa Fe railroad in shallow pools. 



RoRiPA occiDENTALis Greene, Pittonia, :5: 97. 1896. 



Nasturtium occideniale Greene, Fl. Fran. 268. 1891. 



No. 7890, collected ]\Iay 29, in sand at the river bridge 

 near Redding, Shasta county. The stems are depressed or pros- 



