980 



INDEX. 



Water oforganisution, 3 1,62. 

 Water-pores, 949. 

 Watsonia, 584, 

 Wax, 99. 

 Wellingtonia, 509. 

 Welwitschia, 66, 170, 528, 



53ij 953. 

 Wendungszellen, 299, 302 



(Fig. 202). 

 Whorl, 170, 187. 

 Whorl, Spurious, 170, 187. 

 Widdringtonia, 527. 

 Wistaria, 653, 950. 

 Wood, HI. 

 Woodwardia, 433. 

 Wrangelieae, 290. 



Xanthium, 215, 940. 

 Xanthophyll, 765. 



Xanthoxylaceae, 660. 

 Xylaria, 316. 

 Xylem, iii. 

 Xylem-portion of fibrovas- 



cular bundle, 116. 

 Xylem ray, in, 131. 

 Xylophylla, 217, 935. 

 XyrideiE, 632. 



Yeast-fungi, 249. 

 Yew, 512. 

 Yucca, 127, 629. 



Zamia, 501, 505, 958 (Figs. 



342, 344)- 

 Zanichellia, 618. 

 Zea, 580, 620, 925. 

 Zinc, 695. 

 Zingiberaceae, 625, 632 (Fig. 



429). 



Zoogonidia, 12, 240 (Figs. 3, 

 4, 9, 162, 167, 168, 169, 

 173, 176, 178, 180, 182). 



Zoospore, 234, 254 (Figs. 

 167, 168, 181, 183). 



Zoosporeae, 253. 



Zostera, 557. 



Zygnema, 46, 258. 



Zygnemeae, 257. 



Zygogonium, 258. 



Zygomorphic, 204,610, 611, 

 612, 613. 



Zygomycetes, 9, 244, 955. 



Zygophyllaceae, 660. 



Zygospore, 9, 224, 234, 254, 

 258, 265, 897 (Figs. 162, 

 167, 168, 170, 171, 174, 



175). 

 Zygosporeae, 244, 250. 



1^ 



THE END. 



O 



