41 



Panicum crus-galli. 



Frequently seen on the borders of the creeks. In some localities 

 very abundant. 

 Panicum sanguinale. 



Seen in several places on the creek bottoms. 

 Panicum colonum. 



With the preceding. More common. 

 Panicum cap Mare. 



Occasionally seen associated with the preceding. 

 Panicum proliferum. 



This grass, so common in cultivated ground in eastern Texas, I 

 saw onty in one spot by the side of Toy ah Creek. 

 Panicum obtusum. 



This was often seen on the borders of creeks ; sometimes on the 

 gravelly slopes near the sides of creeks. I have seen it in 

 great luxuriance on the borders of creeks whose waters are 

 strongly alkaline. 

 Panicum Havardii. 



Several plants of this tall, striking grass, I saw scattered about 

 at the Sand Hills in October. Not seen elsewhere. 

 Panicum Hallii. 



Another grass peculiar to the Sand Hill region. Its procumbent 

 stems, rooting at the joints, are scattered freely among the 

 other grasses, but not forming patches. 

 Paspalum distichum. 



Occasionally seen in muddy places on the borders of creeks. 

 Where the soil is gravelly it does not thrive. 

 Erioch loa punctata. 



Frequently seen on creek bottoms. Often mixed with Panicum 

 sanguinale. 

 Sctaria setosa and var. caudata. 



Both of these are plentiful in the valleys of western Texas ; gen- 

 erally in soils adjacent to creeks. Not rare on low ridges near 

 the borders of creeks. The var. seems more abundant than 

 the type, 

 CcncJirus tribuloides. 



One of the most common grasses at the Sand Hills. Fortunately 

 it thrives only in sandy soils. 

 Cenclirus myosuroides. 



This was seen only in one locality ; in large clumps by the side 

 of the creek at Cibilo Canon. 

 Trvpsacum dactyloidcs. 



This was seen only at Musquis (south of Fort Davis) growing in 

 clumps in a few places along the creek. 



