43 



Aristida dispersa. 



In the same localities as the preceding and in like soils and situ- 

 ations. 

 Aristida Palmeri. 



Several specimens of this were seen scattered about on the lower 

 ridges and mesas in the Limpia region and in the Chenates. 



Aristida p u rpurea. 



Different forms of this were seen near many of the creeks and 

 on the slopes of the lower ridges. 

 Aristida Havardii. 



This was seen in a few places on the lower mesas at the south- 

 ern base of the Chenate Mountains. 

 Aristida. 



On the prairie extending south of Marfa I saw several plants of 

 this scattered here and there. At the southern edge of the 

 Staked Plains, about Odessa, it is the most prevalent grass, 

 known as the " White grama." 

 Aristida SeMediana. 



Seen at several places in the neighborhood of Musquis and in the 

 Limpia region. Growing like other grasses on the craggy 

 slopes in the gravelly soil between the rocks and bowlders. 

 Stipa Jlcjcuosa, n. sp. 



Seen only on some of the lower mesas near Medero Creek. Grow- 

 ing in clumps in abundance. 

 Oryzopsis fimbriata. 



Seen in a few places on the craggy slopes in the Limpia region 

 and at Paisano. 

 Mulilenbergia Texana. 



Frequent on the mesas and high prairies. On the low prairie at 

 Toyah Creek I saw several specimens. 

 Mulilen bergia arenicola. 



Common on the high prairie between Fort Davis and the Chen- 

 ates. 

 Mulilenbergia monticola. 



Several clumps of this I saw scattered about on the craggy slopes 

 in the Limpia region. 

 M u h leribcrgia spiciformis. 



Seen in the same localities of the preceding, also at Musquis 

 Canon. It offers a rare exception among grasses in its choice 

 of habitation. I found it nowhere on the gravelly slopes. All 

 the specimens I saw were growing on the steep sides of ledges, 

 sometimes on very narrow shelvy places on the side of a steep 

 cliff; often in fissures of the rock, with no soil apparently for 

 its nourishment. 



