276 INDEX 
Temperature as related to crop areas, Triticum, turgidum, 240, 242. 
79. vulgare, 238, 240, 241, 242. 
Teosinte, 58, 160. 
Texas millet, 50, 183. Uniola, 221. 
Thysolena agrostis, 69. Uva-grass, 224. 
Tickle-grass; 77. 
Timothy, 42, 202. Valota, 177. 
and clover mixed, production of, 15. Vegetative organs, morphology of, 95-- 
by states, 84. ikke 
crop area, 80. Velvet bean, 52. 
production of, 15. grass, 35, 45, 209. 
by states, 84. Vetch, 52. 
standard hay of the East, 56. Vicia sativa, 52. 
Trachypogon, 165. villosa, 52. 
Tribes of grasses, 154-156. Vigna sinensis, 51. 
Trichloris, 214. 
Tricholena, 76, 179, 184. Water-grass, 179. 
rosea, 184. > grasses, 138. 
Tridens, 221. Weeds, 75-78. 
flavus, 39. annual, 76. 
Trifolium, 41. brome-grasses, 77. 
incarnatum, 41-42, 52. biennial, 76. 
hybridum, 41. grasses as, 76. 
pratense, 41. perennial, 76. 
repens, 41-42. eradication of, 78. 
Triplasis, 221. Wheat, 238. 
Tripogon, 213. classification of, 242. 
Tripsacum, 159. durum, 242. 
dactyloides, 160. grass, 238. 
Trisetum, 209. slender, 45. 
Tristeginee, 175. origin of, 240. 
Triticum, 235, 236, 238. Polish, 241, 242. 
egilopoides, 240. Wild grasses, production of, 19. 
estivum, 241, 242, Winter fat, 21. 
compactum, 240. Wire-grass, 32, 39. 
dicoccoides, 240. 
dicoccum, 239, 240, 241, 242. Xerophytes, 140-145. 
durum, 240, 242. 
monococcum, 240, 241, 242. Zea, 159. 
ovatum, 240. mays, 161. 
polonicum, 240, 241, 242. Zizania, 190, 191. 
sativum, 238, 241, 242, 243. aquatica, 191. 
compactum, 243. latifolia, 191. 
dicocecum, 243. palustris, 7, 146, 191. 
durum, 243. injury to seeds of, by drying, 
spelta, 243. 138. 
tenax, 243. Zizaniopsis, 190. 
turgidum, 243. miliacea, 146. 
vulgare, 243. Zoysia pungens, 175. 
spelta, 239, 240, 242, Zoysiez, 173, 
