XII CONTENTS. 



Tribe VIII. Agrostideae 113 



Key to the genera of Agrostideae 113 



Aristida 114 



Stipa 124 



Muhlenbergia 130 



Oryzopsis 141 



Milium 145 



Brachyelytrum 146 



Phleum 148 



Alopecurus 150 



Sporobolus 155 



Cinna 163 



Agrostis 168 



Calamagrostis 175 



Calamovilfa . . 181 



Tribe IX. Aveneae 183 



Key to the genera of Aveneae 184 



Holcus 184 



Avena 185 



ATrhenatherum 190 



Danthonia 192 



Tribe X. Chlorides 194 



Key to the genera of Chloridese 194 



Cynodon 195 



Beckmannia 197 



Spartina 199 



Schedonnardus 201 



Bouteloua 204 



Eleusine 209 



Buchloe. . .«, 2il 



Tribe XI. Festuceae 212 



Key to the genera of Festuceae 213 



Gynerium 214 



Phragmites 215 



Triodia 218 



Triplasis 221 



Koelena 222 



Eragrostis 224 



Eatonia 237 



Diarrhena. 241 



Melica 242 



Uniola 247 



Dactylis 248 



Briza 251 



Poa 252 



Scolochloa 267 



Glyceria 269 



Festuca 275 



Bromus 284 



