PLANTS OF THE SAN BERNARDINO MOUNTAINS 223 



CISTACEAE 



Helianthemum scoparium Nutt.; T. & G. Fl. 1: 152. 



Abundant on dry hillsides in the Lower Chaparral Zone. 



VIOLACEAE 



Viola blanda Willd. Hort. Berol. t. 24. White Violet 



Frequent about cold springs and bogs in the Transition and Canadian 

 Zones. 

 Viola chrysantha Hook. Ic. t. 49. Yellow Violet 



Abundant in meadows in Bear Valley, and occasional el-sewhere in the 

 Transition Zone. 

 Viola obliqua Hill. Hort. Kew. 316, t. 12. 



In meadows at Seven Oaks, Upper Transition Zone. 

 Viola canina Linn. var. adunca Gray, Proc. Am. Acad. 8: 377. Blue Violet 



Frequent on moist banks in the Transition Zone. 

 Viola praemorsa Dougl.; Lindl. Bot. Reg. t. 1254. 



Frequent in pine forest in the Transition Zone. 



LOASACEAE 



Mentzelia albicaulis Dougl. ; Hook. Fl. Bor. Am. 1: 222. 



Common in dry soil in the Pinon Zone, and also in Bear Valley. 

 Mentzelia davidsoniana Parish, comb. nov. Acrolasia davidsoniana Abrams, 

 Bull. Torr. Club 32: 5.38. 



Common in dry soil in the Piiion, and in Bear Valley in the Upper Transi- 

 tion Zone. 

 Mentzelia dispersa Wats. Proc. Am. Acad. 11: 115. 



Occasional in dry soil in the Lower Chaparral Zone. 

 Mentzelia laevicaulis T. & G. Fl. 1: 535. 



Occasional in dry washes in the Lower Chaparral Zone. 

 Mentzelia micrantha T. & G. Fl. 1: 535. 



Occasional in dry soil in the Lower Chaparral Zone. 



DATISCACEAE 



Datisca glomerata B. & H. Gen. PI. 1: 845. 



Occasional on the banks of streams in the Lower Transition Zone. 



(To be continued) 



