INDEX 



427 



"Finger and Toe" disease (Plas- 

 modiophora brassicte), 143, 251, 



254 ( fi g.). 

 Fir Clubmoss (Lycopodium selago), 



3 I 4- 

 Fir, Douglas (Pseudotsuga doug- 



lasii), 128, 129, 352 (fig.), 353 ; 



Scotch (Pinus sylvestris), 37, 



141, 152, 166, 334 et seq. (figs.); 



Silver (Abies), 335, 336 (fig.), 



344, 347 ; Spruce (Picea 



excelsa), 63, 334, 335 (fig.). 

 Fixation of nitrogen, 266, 267. 

 Flagellata, 406. 

 Flax (Linum usitatissimum) , 34, 



265 ; New Zealand (Phor- 



mium tenax), 34. 

 Fleshy roots, structure of, 132, 133, 



154, 155 (fig.). 

 Flexibility (of petiole), 115. 

 Floating Algae (Plankton), 192, 193 



(fig.), 207, 210. 

 Floating leaves, structure of, 101, 



174, I??- 



Floating Pondweed (Potamogeton 

 natans), stem-structure of, 172, 



174 (fig-)- 



Floral axis, 354, 355, 370 ; nec- 

 taries, 144, 148, 149, 363. 



Flowering Plants. See Angiosperms. 



Flowering Rush (Butomus), 356. 



Flowers, 354-6, 373 ; cleisto- 

 gamic, 364 ; colour of, 63 ; 

 detachment of, 142 ; nectaries 

 of, 144, 148, 149, 363 ; odour 

 of, 62 ; zygomorphic, 355, 



373-. 



Flowers of tan (Fuligo), 251. 

 Flowing water, plants of, 195, 197. 

 Fly-disease (Empusa muscee), 231, 



238. 

 Fly Toadstool (Amanita muscaria), 



255. 



Focusing under the microscope, 

 400. 



Foliose Liverworts (Jungerman- 

 niales), 271 ; antheridja of, 

 279 ; archegonia of, 280 ; pro- 

 tonema of, 288 ; sporogonia of, 

 271 (fig.), 282 ; structure of, 

 271 (fig.), 272 ; vegetative 

 reproduction of, 277. 



Food-content of plant-products, 53. 



Food-plants, 43, 44, 45, 48, 49, 

 52, 53, 60, 203, 204, 255, 261, 



323, 352. 



Food-reserves, 40-52, 242, 319 ; 

 accumulation of, 13 ; in seeds, 



4, 44, 45, 47, 49, 50, 52, 333, 

 351 ; in storage-organs other 

 than seeds, 44, 45, 50 ; nitro- 

 genous, 50 ; storage of, 40, 64, 

 88, 132 ; translocation of, 6, 

 41, 46, 52, 124, 132, 282. 



Food-storage, 13; in Fungi, 231; 

 in Liverworts, 273; inoospores, 

 223 ; in roots, 132 ; in seeds, 

 4, 44, 45, 47, 49, 5, 52, 

 333, 35i ; in spores, 319, 321 ; 

 in zygospores, 185. 



Foot, 282, 370 ; of Ferns, 302 ; of 

 Liverworts, 282, 283 (fig.) ; of 

 Mosses, 284, 285 (fig.) ; of 

 Selaginella, 320 (fig.). 



Forests, distribution of, 334, 391. 



Forget-me-not (Myosotis), 102 ; 

 - mildew (Oidium), 243. 



Forked branching of, Algae, 200, 201 

 (fig.) ; Ferns, 290 ; Lycopo- 

 dium, 315 ; Mosses, 269, 275 ; 

 Selaginella, 315. 



Forked venation, 292, 322. 



Fossil plants, 310, 312 (fig.), 313, 

 3H (fig-), 319, 322, 327-33 

 (figs.), 334. 340, 356, 394, 407. 



Foxglove (Digitalis), 48, 363. 



Fragmentation, in Algae, 212, 215 

 (fig.), 216; in Bryophyta, 277. 



Fraxinus excelsior, 120, 122, 128, 

 129. 



Free central placenta, 356 ; nu- 

 clear division, 245, 319, 368. 



Fronds of, Brown Algae, 199-204 

 (figs.) ; Ferns, 289-91 (fig.), 



297 (fig-), 304 (fig-), 305 (fig-), 

 308 (fig.), 309 (fig.). 



Fructose (fruit-sugar), 45, 46, 53, 

 55 ; reactions of, 47. 



Fruit-bodies of, Ascomycetes, 239 

 (fig.), 240 (fig.), 242, 243 (fig.), 

 244 (fig.) ; Basidiomycetes, 

 248, 249 (fig.), 250 (fig.), 251 

 (fig.) ; Lichens, 258 (fig.), 259, 

 260. 



Fruits, 31, 33, 46, 61, 63, 93, 103, 



370 ; unripe, 60. 

 lla 



Frullania tamariscini, 272 (fig.). 



Fuchsia, hydathodes of, 146 ; leaf- 

 structure of, 107-10 (figs.). 



Fucus, conceptacles of, 201 (fig.), 

 202, 224, 225 (fig.) ; habitat 

 of, 200 (fig.), 203 ; sexual 

 reproduction of, 220, 221 (fig.), 

 224-6 (fig.), 307 ; thallus of,2OO- 

 202 (figs.), 225 (fig.) ; vegeta- 

 tive reproduction of, 216. 



