648 



INDEX 



349; Fig. 42 



archegonium, 4. 



setae, 98 

 perianth, 65, 113 



Porella, 109 

 periblem, 253 

 perichsetum, n, 12 

 pericycle, 332, 337, 360 

 pericyclic sector, 223 

 perinium, 5, 19, 64, 343 

 perispore, 560 



peristome, 165, 210, 211, 213, 216, 

 218, 220 



Bryales, 220 



hygroscopic movements, 166 



Polytrichaceae, 225 

 Permian, 582 



petrifactions, 576, 577, 579 

 phanerogams, 291 

 Phoradendron, 504 

 Phascacese, 161, 166, 188 

 Phascum, 216 



archesporium, 216 

 cuspidatum, 



embryogeny, 216; Fig. 215 

 stibulatum ; Fig. 1 16 

 phloem, 326, 332 

 photosynthesis, 572, 573 

 Phylloglosseae, 504 

 Phylloglossum, 485, 486, 492, 502, 



503, 533, 598, 599 



gametophyte, 503 

 Drummondii, 502; Fig. 200 

 Phyllotheca, 587 

 Physiotum, 104 



Pilularia, 233, 417, 418, 419, 442 

 antheridium, 421 

 female prothallium, 424 

 embryo, 426 

 sporangium, 438 

 sporocarp, 435, 436, 437, 439 

 Americana, 432, 434, 436, 438; 



Figs. 252, 254 

 globulifera, 423, 424, 432, 435, 436, 



439; Fig. 246, 249, 251, 256 

 Pinus, 591 

 pinnae, 



subsidiary, 5?t 

 placenta, 340 



Plagiochasma, 56 

 Platycerium, 394, 395 

 alcicorne; Fig. 232 

 Wallichii, 339 

 Pleuridium, 216 

 leaves, 216 

 subulatum; Fig. 115 

 plerome, 253 

 Pleurocarpas, 218 

 Pleurococcus, 564 

 pleurozoidae, 119 

 polar-body, 355 

 pollen-spores, 4, 591, 603 

 pollen-tube, 604 

 polyembryony, 492 

 Polypodiacese, 305, 306, 310, 311, 312, 

 314, 33i, 339, 349, 357, 362, 367, 

 392, 439, 440, 570, 584, 603 

 embryo, 321 

 sporangia, 395 

 stem, 328 



stem-apex and structure, 329 

 structure of primary stele, 327 

 vascular bundles of stem, 330 

 Polypodium, 339, 341, 394, 440 



development of sporangium, 340 

 falcatum, 336, 344; Figs. 182, 189, 



190, 231 

 lingua, 335 

 polystelic stem, 526 

 Polystichum angulare (var. pulcher- 



rimum), 309 



Polytrichaceae, 162, 163, 165, 218, 

 220, 221 



male inflorescence, 224 

 peristome, 225 

 shoot, 222 

 stem, 222 



Polytrichum, 162, 164, 199, 203, 222, 

 229, 565, 578, 595 

 calyptra, 225 

 leaves, 221 

 sporogonium, 224 

 stem, 221 



commune, 218, 221; Figs. 119, 121 

 formosum, 218 

 juniperinum, 223 

 Populus, 574 

 Porella, 113, 115, 176 



