I. INDIA 



239 



Water plants, 178. 



Weed communities, 117, 120, 124. 



flora, introduced or alien, 4, n. 



of gateways, 16, 183. 



paths, 183. 



- rick sites, 185. 

 shady places, 177, 185, 186. 



trodden places, 183, 184. 

 Weeds harmful to farm products, 112- 



116. 

 human heings, 103-12. 



live stock, 103-12. 



Wheat, 5, 6, 7, 52, 58, 70, 102, 105, 



112, 114, 160-74. 

 Willow-herb, 23, 25 (fig.). See also 



Epilobium spp. 



Willow-weed, 66, 70, 76, 117, 131, 133, 

 151, 157, 169, 188, 220. See also 

 Persicaria. 



Wind, weeds distributed by 17, 21. 



Winged fruits, 21, 22 (fig.). 



seeds, 21, 22 (fig.), 99. 



Woad, 194. 



Woburn Experimental Station, 53. 



Woodwax, 35 (fig.), 37, 66, 115, 176, 

 779, 188, 194, 214. 



YARROW, 17, 28, 115, 128, 151, 179, 



182, 188, 206. 



Yellow Rattle, eradication, 99. 

 Yorkshire Fog, 2, 27, 44, 176, 179, 185, 



215. 



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