436 



INDEX. 



Topography, General, of Iowa 382 



Tbrresia ill 



Tosagris 130 



ttia 150 



Trachynetia 199 



hyrum 155 



Triaphis 192 



Trichodium 168 



hyemalis 172 



laxifolium 172 



Tricuspis 218 



purpurea 221 



Tridena 218 



Triodia 213, 218 



Key to the Species of 218 



cuprea. f. 153. m. 220 218 



purpurea. /. 155. m. 220 218, 221 



Triplasis 213 



Triplasis purpurea 221 



Triple-awned trra-s. 



Prairie, f. 86 ..120 



Tufted. /. S3 117 



Tripsacum 6, 20 



dactyloides f.U. ra. 39 21 



Tristeqine^E 3, 5, 42 



Triticum.... 309, 320 



vulgare. f. iSl. - '. m. 324 327 



Triticum sativum 327 



Tufted Triple-awned Grass. /. 83 117 



Tumble Gra-s, f.U 58 



Small /. 1,2 59 



Turkey-foot Grass, f. 21 29 



Twin Grass. /. 168 241 



Two-rowed Barley, j 830 



Typhodes 10(5 



Uniola 213,247 



latifolia. f. 172 247 



Upland Bent Grass. /. 123 174 



Upright Chess. /. 214 304 



Urachne 142 



Uralepis 218 



Vanilla Grass. /. 80 128 



Vanilla Grass, Sweet. /. 78, 79 110 



Vaseya 130 



Velvet Grass. /. ISO 185 



Vilfa 155 



cryplandra 161 



Vilfa — Continued. 



cuspidata 



heterolepis 



ran inaeflora 



Vulpia 



Walter's Paspa'um. /. 

 Weak Spear Grass. /. 

 Western Wheat, Grass. ./'. :.'■'• 



Wheat. /.:.,!. :.:: 



Wheat Grass : 



Awned. /. 223, .. .. 



Richardson's. /. .'.'.' 



Slender. /. .'.", 



8oft Western. /. 226 



Western. /. 125 



White Grass. /. 70 



Whorled Millet, f. 61 



Wild Barley. /. W6 



Wild Millet. /. 105 



Wild Rye, Arkansas. /. ."/,.. 



Wild Timothy. /'. tiO 



Windsoria. . . 



Wire Grass. /. U7, 178 



Wisconsin Drift 



Wolf's Meadow Giass. f. 181. 



Wood Chess. /. 200 



Wood Brome Grass. /. .'"" 

 Woodland Drop Seed. /. 101 . 



Woodland Xerophytes 



Wood Meadow Grass. / 182 



Xerophytes 



Zea. f.S 



amylacea 



amyleasaccharata 



canina. f.U 



everta. /. S. 7, 12 



indentata. / ■',, 6 



indurata. /. .?, 9 



mays. m. 39 



saccharata. f.S, 8 



tunicata. /. 5. 



Zeocriton 



Zizania 



aquatica. /. 69. m. 93 



Zones, Life 



Zoysia 



ZorsiE.c 



.203, 



100 



162 



158 

 275 

 44 

 257 

 319 

 327 



317 



315 



318 



321 



319 



99 



84 



335 



146 



345 



198 



218 



255 



... 372 



. .. 259 



. . 288 



. .. 28$ 



. .. 140 



... 394 



... 261 



... 391 



.6, 8 



... 10 



10 



9, 10 



9 



... 9 



... 9 



... 8 



... 10 



... 9 



... 329 



... 96 



... 97 



... 388 



... 40 



... 5 



