380 



PLANT-LIFE 



Wind in seed dispersal, 328 

 Wintergreen, 215 

 Wolflla, 198 



arrhiza, 198 

 Wood Avens, 331 



Horsetail, 159 

 Woodruff, 284 

 Wood-Sage, 215 



-Sorrel, 327 

 Worms, 356 

 Woundwort, 342 



Xerophytes, 357 



Yams, 202 

 Yeasts, 93 

 Yellow Archangol, 352 



Bird's-nest, 292 



Chanterelle, 96 



Yellow-Horned Poppy, 360 



-Rattle, 209, 293 

 Yews, 180, 185, 190 

 Yucca and moths, 291 



Zannichellia palustris, 196 

 Zea mais, 199 

 Zingiber officinale, 202 

 Zooglcea, 17 

 Zoosporangium, 66 

 Zoospores, 49, 102, 296 



of Vlothrix, 40, 41 

 Zostera, 304 



marina, 195 

 Zygnema, 38 

 Zygnemacese, 34 

 Zygomycetes, 105, 106 

 Zygospore, 81, 105 

 Zygote, 34, 37, 39, 42, 54, 59, 62 



BILLING AND SONS, LTD., PRINTERS. GUILDFORD, ENOLAND 



