44 



Mulilenoergia , n. sp. 



Several specimens of this were seen on the craggy slopes atLim- 

 pia Caiion. 

 Lycurus phleoides. 



Common on the lower ridges and mesas. I saw several plants of 

 it on the slight ridges that mark the uneven surface of the 

 prairie land around Marfa. 

 Epicampes distichopJiylla. 



This is one of the most common grasses on the craggy slopes of 

 the mountains. The form without awns I saw only in the Lim- 

 pia region. 

 Epicampes stricta. 



Seen only in two localities — in gravelly soil near Medero Creek 

 and in one spot near the creek atMusquis Caiion. 

 Sporoholus airoides. 



The prevailing grass along saline and alkaline streams. At nearly 

 all the creeks in western Texas, on the low prairies and in the 

 broad valleys subject to overflows, large level surfaces are 

 covered with tussocks of this grass. 

 Sporoholus Wriglitii. 



Common on the bottom land of the Rio Grande. Often mixed 

 with the preceding on the flats by some of the creeks. 



Sporoholus cryptandrus. 



Frequent on the high prairies. Common at the Sand Hills. 

 Sporoholus cryptandrus, var. str ictus. 



Scattered about in abundance at the Sand Hills. A few speci- 

 mens seen near Toy ah Creek. 

 Sporoholus cryptandrus, var. flexuosa. 



One of the most common grasses at the Sand Hills. 

 Sporoholus cryptandrus, var. rohusta. 



A striking feature of the grass growths at the Sand Hills. Less 

 common than the preceding. 

 Sporoholus Nealleyi, n. sp. 



Seen at the Sand Hills only in one spot. 

 Sporoholus ramulosus. 



Frequent at the Sand Hills ; seen in a few places on the prairie 

 near Marfa and in a valley near Musquis. 

 Sporoholus asperifolius, var. 



Seen at several places along Toyah Creek. Not seen elsewhere. 

 Sporoholus repens. 



Seen at several places on the prairie near Marfa ; sometimes in 

 patches occupying the ground for some yards. A few plants 

 also seen in a valley near Musquis. 

 Agrostis verticillata. 



Frequent on the borders of creeks. 



