INDEX AND GLOSSARY 



559 



Extension, the elongation of a part 

 already formed, 120 



Eyebright (Euphrasia), a green root- 

 parasite, 189, 193. 



Eye-spot, 373. 



Fall of leaf, 68 (Fig. 52), 612. 



False tissue, of Fungi, 405. 



Families, Natural, 492 (Appendix A) . 



Farmer's bottle, 87. 



Fats, storage ol 108. 



Female gamete, or ovum, or egg, 263, 

 265 ; of Coniferae, 304, 307 (Fig. 

 246) ; of Fern, 344 (Fig. 285) ; of 

 Fucus, 385 (Fig. 325). 



Ferments, or enzymes, iii, 112; 

 proteolytic, which break down 

 complex proteid into simpler sub- 

 stances, 207, 209 ; digestive, of 

 Fungi, 406 (Fig. 342). 



Ferns, 316, 326; age of, 326; life- 

 cycle of, 347 (Fig. 291) ; mechan- 

 ism of sporangium, 133 (Fig. 95). 



Fertilisation, the coalescence of male 

 and female gametes to form a 

 zygote, 264 ; in Flowering Plants, 

 270 (Fig. 214 iris) ; in Ferns, 344 

 (Figs. 286, 287) ; indirect in Red 

 Seaweeds, 388. 



Fertilising tube, of Pythium, 409 

 (Fig. 344), 416 ; in Peronosporeae, 

 420 (Fig. 357). 



Festuca o vina, viviparous habit of , 2 1 5 . 



Fibre, a cell much longer than broad, 

 with pointed ends, 28 (Fig. 16), 

 50 (Fig. 37). 



Fibrous cells, mechanically effective 

 in opening the anther, to shed the 

 pollen, 246 (Fig. 193) ; development 

 of, 248, 250 (Fig. 197). 



Fibrous system, 33. 



Fig, hollow succulent inflorescence of, 

 293 (Fig, 242) ; analysis of, 544. 



Figwort (Scrophularia), vascular 

 strand of, 37 (Fig. 23) ; flower of, 

 529 (Fig. 436) ; abortive stamen of, 

 234 (Fig. 183). 



Filament^ the stalk of a stamen. 243 

 (Fig. 191). 



Fihcales, the Ferns, 3 ; general des- 

 cription of, Chap, xxi., p. 326. 



Fine flour, 547. 



Fire-weed (Epilobium), wind-borne 

 seeds of, 295, 



Fissidens, a Moss, bilateral sym- 

 metry of, 172. 



Fission, or branching of parts, in the 

 flower, 232 ; of stamens in VcUozia, 

 232 (Fig. 181) ; of cells of Euglcna, 



374 (Fig- 313)- 



Fission-algae (Cyanophyceac), 456. 



Fission Fungi (Bacteria), 456, 458. 



Flagellum, of Euglena, 373. 



Flattened surfaces, stiffening of, 140. 

 154 ; protection of margins of, 

 157 (Figs. 117, 118). 



FUes, killed by Empusa, 423. 



Floral construction, 492 (Appendix A). 



Floral diagram, explained, 229 (Fig. 

 178). 



Floral formula, a compact mode of 

 registering the component parts of 

 a flower, 229, 230. 



Flower, a simple shoot which bears 

 sporangia, 220 (Chap, xiii.) ; parts 

 of, 221 (Fig. 168) ; definition of, 

 222 ; comparison of, 229 ; of 

 Conifers, 307 (Figs. 246, 250. 251). 



" Flowers " of Mosses, 370. 



Flowering Plant, 2, 5. 



Flowering, its relation to storage, 1G3. 



Fluctuating variations, deviations 

 from type which can be referred to 

 the impress of external circum- 

 stances : not heritable, 129. 471. 



Foliage-spurs, of Pine, 303, 304 (Fig. 

 246). 



Foliar-gaps of Ferns, 330 (Fig. 267). 



Follicle, a separate carpel splitting 

 along its margins, and containing 

 several seeds, 285 (Fig. 227) ; of 

 Aconite, 287. 



Fontinalis, aquatic habit of, 353 ; 

 peristome of, 364 (Fig. 308). 



Food of Plants, 93 ; suppUed in 

 solution, 96. 



Food-stufts, 540 (Appendix B). 



Foot, the suctorial organ in the 

 embryo : in Ferns, 346 (Fig 288). 



Form, modifications of. Chap. x. 



Formic aldehyde, 104. 



Foxglove (Digitalis), 530. 



Fragaria vesca (Strawberry), 520 

 (Fig. 427). 



Fragmentation, the direct division 

 of nuclei, without formation of a 

 spindle, 249. 



Free-central placentation, of ovules, 

 when seated on an apparent pro- 

 longation of the floral axis into the 

 ovary, 255. 



French-Bean (Phaseolus vulgaris), 

 analysis of, 542 ; origin of, 543. 



