/ 
ILLUSTRATIONS. 
Ae Panicum erus-galli. 
ae 
SMA os sls 
FREES 
= ee ee 
pe se 2 
= 
Sebeos 
Oh gr or ees 
GB es ar 
5 
S 
&, 
= 
= 
o 
i= 
ey 
4 
ies 
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re 
° 
oS 
g 
=] 
=} 
S 
i=} 
9 
— 
ee AS eae 
ROS > 
2s 
= 
3 
= 
3 
S 
=) 
Q 
S 
3 
x} 
-_ 
= 
_ 
x 
14, Deschamsia cwspitosa. 
15. Chloris alba. 
16. Bouteloua ee 
~ 
Bouteloua polystachya. 
Buchle dactyloides. 
Triodia trinerviglumis. 
a, poeoides, 
chya. 
Distichlis maritima. 
var. 
megas- 
