INDEX. 



507 



Pannaria, 124. 



Papaver, flower, 455 ; fruit, 

 429 ; placentation, 374 ; 

 stigma, 380. 



Papaveraceae, 469 ; floral 

 formula, 459. 



Papilionaceae, 471 ; endo- 

 sperm, 396; floral dia- 

 gram, 457 ; floral formula, 

 420, 421 ; flower, 422, 

 424, 425; inflorescence, 

 411. 



Paraphyses, 103, iii, 132, 

 134, 141, 174, 216. 



Parietal cells, 363, note 1. 



Parietal layers, 363, note i. 



Paris quadrifolia, floral for- 

 mula, 420 ; floral diagram, 

 438. 



Parmelia, soredia, 124. 



Parnassia, floral diagram. Fig. 

 382. 



Parnassieae, 470. 



Paronychiaceae, 468. 



Parthenogenesis, 64. 



Passiflora, intine, 367 ; floral 

 axis, 348. 



Passifloraceae, 470. 



Pashiflorineae, 470. 



Pauliinia, stem, 465. 



Pediastrum, 39, 40. 



Pediastrum granulatum, 39. 

 (Fig. 19.) 



Pedicularis, endosperm, 460, 

 461 ; floral diagram, 414. 



Peduncle, 304. 



Peganum Harmala, floral 

 diagram, 436 ; flower, 423. 



Pellia, capsule, 152 ; ger- 

 mination, 146; thallus, 

 145. 



Pelliaepiphylla, embryo, 142. 

 (Fig. loi.) 



Peltate leaves, 453. 



Peltigera, 115, 124. 



Peltigera horizontalis. Fig. 



73- 



Peltolepis, antheridia, 160. 



Pelvetia. See Fucodium. 



Penicillate (stigma), 380. 



Penicillium, 81, 107; gonidia, 

 109; pycnidia, 104; sporo- 

 carp, 107 note; stilogo- 

 nidia, 10. 



Penicillium glaucum, 103, 

 107 ; asexual reproduc- 

 tion, 107 ; gonidia, 83 ; 

 sexual reproduction, 107, 

 108. 



Perianth, 303, 349; relation 

 to pollination, 352. 



Periblem, 302, 397. 



Pericarp, 402, 427. 



Perichaetium, 141, 174- 



Periderm, 463. 



Peridiola (Gasteromycetes), 

 137. 



Peridium, 113, 126, 137, 138. 



Perigonium, 174. 



Perigynium (Mosses), 142. 



Perigynous, 372. 



Periplasm, 95 and note. 



Periploca graeca, inflores- 

 cence, 408. 



Perisperm, 305, 394. 



Peristome, 186. 



Perithecium (Ascomycetes), 

 107. 



Perizonium (Diatoms), 19. 



Peronospora, 92, 93, 94, 95, 

 96. (Figs. 4, 58.) 



Peronospora Alsinearum, 



93- 

 Peronospora arborescens, 95. 



(Fig. 58.) 

 Peronospora calotheca, 93. 

 Peronospora de Baryanuin, 



92, 95. 

 Peronospora gangliformis, 



93- 



Peronospora infestans, 93, 

 94. 



Peronospora nivea, 93. 



Peronospora parasitica, 93. 



Peronospora pygmaea, 93. 



Peronospora vexans, 92. 



Peronosporeae, 8p, 92 ; mode 

 of life and propagation, 83, 

 92 ; oospores, 7. 



Persea, intine, 367. 



Pertusaria, spores, 122, 123; 

 soredia, 124. 



Pertusaria communis. Fig. 

 82. 



Pertusaria lejoplaca, Fig. 

 82. 



Pertusaria Wulfeni, Fig. 2. 



Petal, 351. 



Petaloid, 350. 



Petiole, 453. 



Peziza confluens, habitat 

 and development, iii, 

 112; sexual organs and 

 fructification, iii, 112. 

 (Figs. 62, 70.) 



Peziza convexula, F"igs. 64, 

 69. 



Peziza Fuckeliana, 112 ; 

 apogamy, 102; fructifica- 

 tion, 112. 



Peziza granulosa, 112. 



Peziza sclcrotiorum, apo- 

 gamy, 102. 



Peziza scutellata, 112. 



Peziza tuberosa, apogamy, 



102. 

 Phaeophyceac, 13, 27, 65; 

 arrangement, 65 ; colour- 



ing matter, 65 ; oosphere, 

 65 ; sexual process, 65 ; 

 swarm-spores, 65; thallus, 

 65. 



Phaeosporeae, 66. 



Phaeozoosporeac. See Phae- 

 osporeae. 



Phallus impudicus, 1 58 ; 

 course of development, 

 138. (Fig. 93-) 



Phanerogams. See Seed- 

 Plants. 



Phascaceae, 184; arche- 

 sporium, 179 ; capsule, 

 184; embryo, 178; pro- 

 tonema, 163; stem, 168, 

 169. 



Phascum, 184; capsule, 185 ; 

 rhizoids, r7r. 



Phascum cuspidatum, 180. 



Phaseolus, embryo, 446 ; 

 fruit, 428 ; seed, 446. 



Phaseolus multiflorus, ger- 

 mination, 449. (Fig. 377.) 



Phaseolus vulgaris, Fig. 502. 



Phcgopteris, 227. 



Philadelpheae, 470. 



Pliilonotis,sporogonium, 1 80. 



Phloem, 309. 



Phlomis pungens, Fig. 307. 



Phoenix, seed, 430. 



Phoenix dactylifera. Fig. 

 356. 



Phormium, phyllotaxis, 435. 



Phragmidium, teleutospores, 

 128. 



Phycochromaceae, 1:4. 



Phycocyan, 13. 21. 



Phvcomyces,nitens,9i. (Fig. 



54.) 



Phycomycetes, 13, 84, 88; 

 divisions, 84; propagation, 

 88. 



Phycophaein, 65. 



Phycoxanthin, 21. 



Phyleitis, 66. 



Phyllactidium, 125. 



Phylliscum, 124. 



Phyllobium, oogamous fer- 

 tilisation, 27. 



Phyllobium dimorphism, 40, 



41- 



Phyllocladus, 359 ; leniale 

 flowers, 330; leaves, 321; 

 verticillate shoots, 321. 



Phyllocladus trichomanoi- 

 dcs, 321. 



Phylloglosseae, 196. 



Phyllogiossum, 196; germi- 

 nation, 274 ; prothallia, 



275 ; sporangia, 274 ; 

 spores, 275. 



Phylloglossum Drunimondii, 



276 note. 



