fl> o s t e i s i a 25 



Besides the plants named there are 

 many to be noted which are more or less 

 distinctly western. The Mexican poppy 

 (Argemone) is perhaps the most conspic- 

 uous roadside plant of the region. The 

 large white flowers first appear in May 

 and the plants often remain in blossom 

 all summer. Gaura coccinea, various 

 evening primroses and the species of 

 Mentzelia are conspicuous. Alfalfa, 

 (Medicago sativa), which is cultivated in 

 this region as a forage plant, has escaped 

 to the roadsides, and its dark green 

 foliage and somewhat somber bluish 

 flowers are everywhere seen. In early 

 summer one may see an abundance of 

 yellow flowers, Sophias, and in the 

 autumn Grindelias of the same color 

 brighten the waste places. Of the 

 Graminece the numerous western species 

 of Bouteloua, Agropyron and Stipa 

 should be mentioned together with such 



