Index 



411 



Vine-tips, speed of, 239 

 Vines, Sidney, quoted, 320 

 Virginia creeper, 237, 242, 245 



tendrils of, 243, 244 

 Vitality of pines, 282, 283 

 Von Sachs, Prof., quoted, 367, 

 368 



Walnut, 69, 71 



Walnuts, 75 



Wasp, 34 



Waste of pollen, 28, 286 



Water-crowfoot, 112 



Water-fertilized flowers, 30, 31 



Water-loving plants, numerous 

 seeds of, 185 



Water-rushes, 180 

 capsules of, 185 

 seeds of, 185, 186, 187 



Wayfaring tree, 57 



Webber, Herbert, 295 



Webster's definition of a weed, 



347 



Weed of civilization, 361 

 Weeds, 36, 37 



as weather prophets, 355, 356 



how they sow themselves, 

 349, 350 



of grain-fields, 351 

 Well-water, 103 

 Wheat, 121, 151 



blossom of, 172, 173 

 Wheat-germ, 118 

 White ash, 75, 76 

 White campion, 225 

 White clover, 339 

 White lily, 108 

 " White-man's-foot.," 361 

 Wide range of wind-fertilized 



plants, 286 

 Wild carrot, 349 " 

 Wild lettuce. 320 

 Wild orange, 323 



Wild rice, 174 

 Wild rose, 136 

 Wild strawberries, 373 

 Wild yew, 270 

 Willow, 58, 61, 62 



pussy, 50 



swamp, 50, 54 

 Willows, 49, 75, 93 

 Wind-fertilized flowers, 30, 31 

 Winged fruits, 85, 349 

 Winged pollen of the coniferae, 



287 



Winter bud, 88 

 Winter refuge of birds, 280 

 Wistaria, 239 

 Witch-hazel, 379 

 Wood, 132, 134, 135 



of cone-bearers, 281, 282, 283 

 Wood-rushes, 180, 182 



capsules of, 185 



seeds of, 185 

 Wood-thrushes, 345, 346 

 Wood-vessels, 128, 133 

 " Wool-grass," 191, 193 

 Wound cork, 364 

 Wound-weed, 357 

 Wych-elm, 380 

 Wych-hazel, 379 



Xyris flexuosa, 187 



Yarrow, 126, 165 

 Yellow-eyed grass, 187 

 Yew, 274, 276 



European, 270 



wild, 270 

 Yews, 270, 298 

 Yucca, habit of growth of, 131 



fertilization of, 208, 211 



filamentosa, 207, 208 



recurvifolia, 212 



Zamia integrifolia, 295 



