INDEX. 



435 



.275, 



.214, 



309, 



43, 



84, 



84, 



84, 



Schedonnanlus Texanus 



Sctiedonoiits 



inermis 



tectorum 



Scolochloa 



festucacea. /. IS',, m. 264. . 

 Scolochloa, Fescue, f. 



Scolochloa arundinacea 



Secale 



cerealc, /. .'•'.'. m. 324 



Serrafalcus. 



patulus 



secalinus 



squarrosus 



Scaler ia .- 



Setaria 



Key to the Species of 



i termanica 



glau a. /. 62. m . 93 



Italica. /. '>',. m. 93 



verticillata. f. 61. m. 73. ... 



vlrldis. /. 63. m. 93 



Sharp Point ed Red Top . /. 126. 



Sheathed Rush Grass. /. 112 



Sheep Fe- cue 



Short-stalked Meadow Grass /. 159 



Short-awned Chess. /. 209 



Short'.- Fescue. /. 196 



Short-spiked Rye Grass. /. '.',0 ... . 



Sieglingia 



i> k rpurea 



seslerioides 



Sioux Quartzite 



Slender Aristida. /. 88 



Slender Drop-seed Grass. /. 102 



Slender Fescue Grass. /. 192 



Slender Lyme Grass. /. .>','■ 



Ball's. /. :;<; 



Slender Muhlenbergia. f. 99 



Slender Reed Grass. /. 119 



81ender Wheat Grass. ./'. 12U 



Slough Grass, f. l',0, V.l 193, 



Sorghum 



avenaceus 



ITitlepcns'' 



nutans 



vulgare 



Spartlna 194, 



cynosuroides. f. l',l. m. 203 



Sugar Cane. /. IS 



Small-flowered Melic. /. 170 



Small Rush Grass. /. 7 13 



Smooth Brome. /. 198 



Smooth-glumed Fringed Brome. /. 10k. . 



Smooth-spiked Chess. /. 108 



Soft Chess. /. 207 



Soils 



Solenachne 



Southern Spear (jrass. /./»;.; 



202 



284 



285 



293 



268 



268 



268 



268 



325 



325 



284 



307 



303 



306 



211 



83 



84 



89 



86 



89 



84 



87 



178 



158 



281 



227 



297 



281 



350 



218 



221 



219 



368 



122 



141 



276 



315 



347 



133 



167 



318 



200 



27 



34 



36 



34 



199 

 199 

 25 

 244 

 159 

 285 

 293 

 297 

 296 

 373 

 199 

 233 



Spear Gras- : 



Chapman's. /. /;; 



Low. /. 176 253 



Southern. /. 163. 233 



Weak. /. 179 



Spermachiton 155 



Spike Grass, Broad- leaved. /.//: 247 



Sporobolus H4, i.,;, 



Key to the Species of 15b 



eryptandrus. /. 115. in. 153 . ..156, 161 



cuspidatus. /. 1U. m. 153 1 5(3, 160 



heterolepis. /. 116. m. Ih6 156, 162 



longifolius. /. 111. m. 153 156 



neglectus. /. US. m. 153 156, 159 



vaginaeflorus. /. US. m. 153 ... 156, 158 

 Sporobolus, Strong Scented. /. 116.... 162 

 Sporobolus: 



asp'r 156 



brevifolius 160 



minor 158 



vaginaeflorus 159 



Spreading Brome Grass. /. .'/: 307 



Squirrel-tail Grass. /. .'.J 332 



Stipa 114, 124 



Key to the Species of 125 



comata. /. 9.;. m . 127 125, 1 28 



spartea. f. 9k. m. 127 125, 129 



viridula. f. 91. m. 127 12"> 



Stipa: 



Green, f. 91 126 



Western. /. 95 128 



Stipa membranacea. f. in', 144 



StreblocJueta 192 



Slreplachne 124 



Slelephuros 148 



Strong-scented Sporobolus. /. 116 162 



Sweet Vernal Grass. /. 78,79 110 



Syntherisma 47 



filiform is 54 



glabra 55 



/ i maris 55 



■prOBCOX 57 



8anguinalis 57 



snot ina 55 



i -illnsa 



Sweet Corn. /. ,;. 8 



Switch Grass, f.4", 



Tall Fescue Grass. /. 195 



Tall Grama Oats. /. 1U 



Tall Melic Grass. /. 169 



Tall Red Top. /. 153 



Temperature Data 



Teosinte. /. .' 



Terrell Grass. /. UO 



Awnless. /. HI 



Thalasium 



Texas Crab Grass. /. 14 : 



Thin Grass. /. 121 



Timothy. /. 10", 



Wild. /. 14n 



54 



1C 



68 



280 



205 



243 



219 



386 



6 



341 



342 



47 



202 



171 



149 



193 



