INDEX 



451 



Embryo, Polypodiaceae, 292 



Psilotales, 217 



Riccia, 169 



Sagittaria, 397 



Sekujinella, 238 



Selaginellales, 237 



Sphagnjuu. 196 



Zamia, 330 

 Embryo sac, 384 



ylnemone, 385, 386 



Fritillaria, 390 



ordinary type, 388 



variation in development, 386, 388 

 Embrj'ophyta, 2 



classification, 2-4 

 Empusa, 120, 121 

 Endarch, 210 

 Endodermis, 21 1 

 Endosperm, 327, 353, 393 

 Endospore, 12, 102 

 Endothecium, 169, 171, 181, 189, 196, 



202, 379, 380, 381 

 Entomophthorales, 120 

 Ephedra, 354, 355 



archegonium, 359 



female gametophyte, 359 



male gametophyte, 360 



ovule, 359 



proemhryo, 361 



strobili, 355 

 Epidermis, 211 

 Epigyny, 375, 376 

 Equisetales, 250 



gametophyte, 254 



sporangium, 253 



sporophyte, 250 



summary, 256 



vascular anatomy, 252 

 Equisetinae, orders, 247 



summar}', 304 

 Equisetum, 250, 251 



embryo, 256 



gametophyte, 256 



sporangium, 254, 255 



stem structure, 253 

 Ergot, 135 

 Ergotine, 135 

 Ericales, 404 



Erigeron, floral development, 378 

 Erysiphe, 127 

 Etapteris, 261 

 Eudorina, 28, 29 

 Euglena, 14 

 Euglenophyceae, cell structure, 14 



relationshifjs, 15 



reproduction, 15 



summary, 16, 93 



Eusporangiato, 226 

 Evolution, i)lant kingdom, 412 



sex, 417 

 organs, 419 

 Evolutionary^ tendencies, algae, 415 



bryophytes, 416 



prominent, 415 



pteridophytes, 416 



spermatophytes, 417 

 Exarch, 210 

 Exohasidiales, 146 

 Exohasidium, 146 

 Eyespot, 14, 26, 27, 39 



Fagales, 399 



Families, Coniferales, 340 



Filicales, 276 



Gasteromycetales, 151 



Hymenomycetales, 147 

 Farinales, 407 

 Fertile spike, 265 

 Fertilization, 30 



Angiospermae, 391 



Fritillaria, 392 



Finns, 350 

 Fiber, 210, 369 

 Filicales, embryo, 290 



families, 276 



gametophyte, 287 



sorus, 284 



sporangium, 286 



sporophyte, 278 



summary, 291 



vascular anatomy, 278 

 Filicinae, orders, 260 



summary, 304 

 Fission, 11 

 Flagellates, 14 

 Flagellum, 14 

 Floral development, 376 



Capsella. 377 



Erigeron, 378 



Ranunculus, 377 

 Flower, 372, 410 



actinomorphic, 374 



apetalous, 373 



apocarpous, 375, 381 



carpel, 381 



choripetalous, 375 



establishment of whorls and definite 

 numbers, 374 



hypogyny, perigyny, and epigyny, 375 



Magnolia, 374 



naked, 374 



ovule, 383 



