INDEX AND GLOSSARY 



465 



Whorl: three or more leaves or flowers 

 at one node, (113). 



Wild geranium. Fig. 195. 



Wild oats, 332. ' 



Willow: buds, 39, Figs. 60, 91; cuttings, 

 21, 26; dioecious, 138; expression in, 

 66; inflorescence, 117, Fig. 229; leaf, 

 99, Fig. 145; mildew, 189, Figs. 348- 

 351; phyllotaxy, 48; pussies, 121, Fig. 

 60; seeds, 168. 



Willow-herb, 394, 



Wilting, 80. 



Wind and plants, 138, 213. 



Windflower, 356. 



Winter bud, 36, 50, 61. 



Winter-cress, 366. 



Wintergreen, 424, Fig. 22; anther, 135; 

 fringed, 140. 



Wistaria. 115, 380. 

 W r itch-hazel, 166. 

 Wood-sorrel, 166, 374. 

 Wood tissue, 281. 

 Woody structure, 3. 



Xanthium, 436, Fig. 555. 

 Xerophytic society, 228. 

 Xylem, 283. 

 Xylol, 302, 303. 



Yarrow, 437. 

 Yeast, 263. 

 Yew, fruit, 164. 



Zebrina, 335. 



Zone societies, 233, Fig. 403. 



Zygospore. 186. 



Printed in ttie United States of America, 



DD 



