IJecember 20, 1905 79 



seems to differ from tridentatum principally in having the calyx 

 tube uncolored, the teeth generally but not always entire. Both 

 species have narrow linear, spinnlose and apiculate leaflets. 



Trifouum SCABRELLUM Greene, Pittonia, 1: 159. 1888. 



Trifoliimi tridentatum var. scabrellum Greene, Fl. Fran. 

 31. 1891. 



No. 7621, collected April 7, in adobe soil in a field a short 

 distance east of Caliente, Kern county. The plants were as- 

 cending rather than decumbent, and the comparatively broad 

 leaflets somewhat variable in shape. The upper leaflets are in- 

 clined to be rounded instead of truncate. The type came from 

 "moist grounds on the plains near Visalia, California, March, 

 1886, Dr. T. J. Patterson." Visalia is about 100 miles north of 

 Caliente. 



No. 7659, collected April 12, on the ridge on the north, 

 side of the mouth of Kern canyon. Here the plants were grow- 

 ing on comparatively dry slopes, are larger, and have calyx 

 teeth greenish, not purple as in the type. The leaflets are prom- 

 inently cusped, the narrower ones inclined to be acute. 



Trifolium melananthum H. & A. Bot. Beech. 331. 1840. 



Trifolium tridentatum var. melanajithum S. Wats. Proc. 

 Am. Acad. 11: 130. 1876. 



Trifolium variegatiun var. melananthum Greene, Fl. Fran. 

 29. 1891. 



No. 7821, collected May 5, at Tehachapi, Kern county, on 

 the edge of a small stream a short distance west of the town, the 

 plants growing in a dense mass, the stems ascending. This may 

 not be melananthum^ but seems nearer it than to any other spe- 

 cies. 



No. 7841, collected May 15, in Los Gatos canyon above 

 Alma, Santa Clara county in wet places along the road. The 

 stems were long, procumbent, growing in tangled mats. Only 

 the tips of the calyx lobes are purplish. The type was collected 

 bv Douglas while working from INIonterev as a base. 



