42 
Hilaria mutica. 
This occurs in all the valleys of western Texas; often in gravelly 
soil near the creeks; not rare on the slopes of the lower ridges. 
On the low prairie at Toyah Creek I noticed it, in some places 
forming large patches of itself, though generally mixed with 
other grasses. 
Hilaria cenchroides. 
iS was seen in two localities; on the high prairie near Marfa-- 
several plants mixed with some of the Gramas; and on one of 
the lower mesas on the south side of the Chenates. 
Tragus racemosus. 
Near Fort Davis, on the high prairie, I saw several plants of this 
scattered about; also in several places along Limpia Creek 
north of the fort. It seems to be thoroughly naturalized. 
impereta Hookeri. 
_ This was seen only in one locality ; by the side of Medero Creek, 
30 miles south of Marfa. 
Elionurus candidus. 
Frequent in many places on the eraggy slopes. It seemed es- 
pecially abundant in the Limpia region and in the neighbor- 
hood of Musquis. I found it at several points at Paisano and 
in the Chenate region, and on some of the hills near Medero — 
Creek. 
Heteropogon contortus. . 
Common on all the craggy slopes of the mountarhs. ! 
——- cirrhatus and Andropogon hirtiflorus. 
of these are common in the Limpia region on the craggy 
Wetec : 
Andropogon saccharoides. 
Jften seen at the base of the lower ridges. More common on 
gravelly soil near the creeks. 
Andropogon Halliz. 
Seen only at the Sand Hills. A few large clumps here and there 
among the other herbage. 
Chrysopogon nutans, 
Seen at Musquis in one locality growing in clumps near the 
creek. Also seen in one other locality; a few scattered plants 
at an arroya near Cibilo Creek. 
Sorghum halepense. 
At Musquis Cajion I saw a few plants growing by the side of 
the creek. Cultivated at Fort Davis and at El Paso. 
Aristida bromoides. 
Frequently seen near the borders of creeks and at the base ofa 
ridge. 
