30 



INDEX. 



203 



Crab Grass— Continued. 



Sprouting. f. 46 



Texan. /. 142 



Cretaceous 



Criterion 



Critho 



Cryptostachys 



Curtopogon 



Cuszco Corn. /. 10, 11 



Cynodon 



Dactylon. /. 139. m. 

 Cynosurus 



teeundus 



Czernya arundinacea 



Dactylis 



glomeiata. /. 174. m. 249 . 



Dactylis cynosuroides 



DactylocU nium 



D anthonia 



spicata. /. 136. m. 187 



Darnel, Poison. /. 221 



Dent Corn. /. 3,6 



Deschampsia. 



caespitosa 



Devonian 



Dcyeuxia 



Canadensis 



Macouniana 



Diachyrim 



Diarrhena 



Americana, f.168. m. 232. 



Didymochceta 



Digitaria 



filiformis 



humifusa 



sanguinalis 



Digraphig 



Dilepyrum aristosnm .. 



iJini' riil 



Dioicopoa 



Disarrt iium 



213, 



184, 



213, 



202 

 371 

 329 

 329 

 155 

 114 

 17 

 194 

 195 

 209 

 215 

 216 

 248 

 248 

 199 

 209 

 192 

 192 

 314 



183 



370 



175 



177 



176 



155 



241 



241 



168 



47 



54 



55 



57 



106 



147 



111 



252 



111 



Distribution, Ecological, Iowa Grasses, 



879, 389 

 Distribution, Geographical, of Grasses 39H 



Downy Brorae Grass. /. 305 293 



Drainage 381 



Driftless Area 363 



Drift Series 371 



Illinoian 372 



Iowan 372 



Kansan 372 



Pre-Kansan 372 



Wisconsin 372 



Drift, The older 365 



Drift, The younger 367 



£)rop-seed : 



Mexican . f. 96 133 



Slender. /. 10Z 141 



Wood-land. /. 101 140 



Early Bunch Grass. /. 166 238 



Eatonia 213, 237 



Key to the Species of 238 



obtusata. f. 166. m. 232 238 



Pennsylvanica. /. 16',. m. 232 239 



Eatonia : 



Blunt-scaled. /. 166 238 



Pennsylvania. /. 167 240 



Eatonia obtusata var. robusta 238 



Eaton's Grass. / 167 239 



Echinoehloa 47 



Edaphic Factor 390 



Ehrhartia 98 



clandestina 100 



Eleusine 195, 209 



Indica. f.U7. ra. 203 209- 



Elymus 309, 340 



Key to the Species of 340 



Arkansanus. f. 244- m. 348 341, 345 



brachystachys. /. SA9. m. 318... 341, 350 



Canadensis. /. 250. m. 348 341, 350 



hirsutiglumis. f. 242 340 



Macounii. /. 24">. m. 348 341,344 



robustus. f. .'.51. m. 318 341,352 



striatus. f. 245 m. 348 341, 346 



" var. Ballii. /. 2-46. m. 348. 341, 347 

 ' ' var. villosus. /. 248. m. 348. 341, 347 



Virginicus. /. 240 340, 341 



" var. submuticus. /. 2,41.. 340, 342 



Elymus. 



Canadensis var. ylaucifolius 350 



glaucifoHus . 350 



Elytrigia 314 



Eragrrostis 213, 224 



Key to the Species of 224 



capillaris. f. 158. m. 220 224,226 



Frankii. /. 15b. m. 220. . 224, 227 



hypnoides. /. 157. m. 220 ...... 224, 225 



major, f. 160. m. 232 2^4,229 



Mexicana. f. 161. m. 232 224,230 



pectinacea. /. 164. m . 232 224, 234 



Purshii. /. 163. . m. 232 224, 231 



trichodes. /. 165. m. 232 224, 236 



Eragrostis: 



Capillary. /. 158 227 



Creeping. /. 157 225 



Hair-like. f. 165 236 



Mexican. /. 161 230 



Eragrostis: 



Curoliniana 231 



erythrogena 227 



pilosa 231 



poatoides var. meyastachya 229 



reptans 225 



tenuis 236 



Erianthus 22 



compactus. f. 17 24 



Eriochloa 46 



mollis. /. S4 46 



Eriocoma 142 



cuspidata 144 



Euchlsena 6 



Mexicana. ./'. .' 6 



Eulalia. f. 16 23 



