47 



Trip lasts purpurea. 



Seen iu a few places at the Sand Hills. 



Diplaclme dubia. 



Common along the creeks. In some places on the creek bottoms 

 it was found growing- very luxuriantly. 

 Diplachne fascicula ris. 



Seen at several points along the Eio Grande, and on some of the 

 creeks. It is somewhat partial to alkaline soil. 



Scleropogon Karicinskianus. 



This was seen often in small patches scattered over the prairie 

 region near Marfa and Fort Davis, and near Toyah Creek. 



Munroa squarrosa. 



This peculiar grass, with its contracted stems and leaves, was 

 seen at several places on the prairie about Marfa— common at 

 the Sand Hills. 



A ninth donax. 



At various points on the Eio Grande. A few specimens seen at 

 Presidio. 

 Phragmites communis. 



Common along the Eio Grande. 



Eragrostis PursMi. 



Common on the creek bottoms. In some places the principal 

 grass growth. 



Eragrostis powoidcs. 



With the preceding, but less common. 

 Eragrostis lugens. 



Frequent in the Limpia region on the craggy slopes. 

 Eragrostis Weo-Mcxicana. 



With the preceding. 

 Eragrostis oxylepis. 



Frequent at the sand-hills. 

 Eragrostis curtipcdicellata. 



A few plants seen at the sand-hills. 

 Eragrostis reptans. 



Seen only at one point at Limpia canon on a grassy slope. 

 JDisticUlis maritim a. 



This common grass of saline and alkaline soils I found in one 

 place by Toyah Creek. 

 Bromus ciliatus, var. 



Seen only at Fort Davis, near the summit of one of the cliffs. 



G. C. NE ALLEY. 



Dr. Geo. Vasey, 



Botanist, Department of Agriculture. 



