• 46 



trate, the smaller plants growing in rosette-like tufts. This is 

 from the type region, "moist low plains bordering the upper 

 Sacramento, and in the foothills adjacent," but may be some 

 other species. Apparently the same thing was distributed by 

 me in 1903 from Donner Lake, no. 6878, as R. curvisiliqua. It 

 may perhaps be R. te7ierrima Greene. 



Tropidocarpum gracile Hook. Ic. //. 4 J. 1836. 



Tropidocarpum scabriusculum Hook. Ic. ^/. 5^. 1837. 



No. 7627, collected April 7, in the narrow valley just east 

 of Caliente, Kern county, growing among grass and other herbs, 

 the plants ascending and rather weak. As this is pubescent, it 

 is probably the form called T. scabriusculum. It may be plen- 

 tiful in that region, but only one small clump was noticed. The 

 type came from Monterey. 



Tropidocarpum macrocarpum Hook. & Harv.; Greene, Proc. 

 Acad. Phila. 1895: 553. 1896. 

 No. 7689, collected April 14, at Randsburg, Kern county, 

 where it is plentiful on gravelly hillsides. It is a rather stout 

 plant, decidedly hirsute, prostrate, no part ever ascending, the 

 whole forming a roundish mat; and this feature is constant, not 

 only in open exposed places on the desert, but in pasture land 

 where there is a rank growth of other vegetation. It was ob- 

 served under the latter condition near the summit of the high 

 ridge west of McKittrick, at Tehachapi, and other places. 



AthysanUvS PUSii.LUS (Hook.) Greene, Bull. Cal. Acad. 1: 72. 

 1885. 



Thysanocarpus pusillus Hook. \q. pi. 42. 1837. 



No. 7711, collected April 18, on grassy slopes at Girard sta- 

 tion in the Tehachapi mountains, Kern county. The species is 

 abundant in this region, and is also one of the most widely dis- 

 persed crucifers native to the Pacific coast. Originally from 

 "Monterey, California.'" 



