INDEX. 



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, in, 132, 



134, 141, 174, 2l6 - 



Parietal cells, 363, note i. 



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. 



Passiflorineae, 470. 



Paullinia, stem, 465. 



Pediastrum, 39, 40. 



Pediastrum granulatum, 39. 

 (Fig. 19.) 



Pedicularis, endosperm, 460, 

 461 ; floral diagram, 414. 



Peduncle, 304. 



Pegamim Harmala, floral 

 diagram, 436 ; flower, 423. 



Pellia, capsule, 152 ; ger- 

 mination, 146; thallus, 

 145. 



Pellia epiphylla, embryo, F42. 

 (Fig. 101.) 



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. 



Periblein, 302, 397. 



Pericarp, 402, 427. 



Perichaetium, 141, 174. 



Peridenn, 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 Baryanum, 



92, 95- 

 Peronospora gangliformis, 



93- 



Peronospora infestans, 93, 

 94. 



Peronospora nivea, 93. 



Peronospora parasitica, 93. 



Peronospora pygmaea, 93. 



Peronospora vexans, 92. 



Peronosporeae, 88, 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, in, 

 112; sexual organs and 

 fructification, in, 112. 

 (Figs. 62, 70.) 



Peziza convexula, Figs. 64, 

 69. 



Peziza Fuckeliana, 112; 

 apogamy, 102 ; fructifica- 

 tion, 112. 



Peziza granulosa, 112. 



Peziza sclerotiorum, apo- 

 gamy, 102. 



Peziza scutellata, 112. 



Peziza tuberosa, apogamy, 

 102. 



Phaeophyceae, 13, 27, 65; 

 arrangement, 65 ; colour- 



ing matter, 65 ; oosphere, 

 65 ; sexual process, 65 ; 

 swarm -spores, 65 ; thallus, 



65- 



Phaeosporeae, 66. 



Phaeozoosporeae. See Phae- 

 osporeae. 



Phallus impudicus, 138; 

 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, 171. 



Phascum cuspidatum, 180. 



Phaseolus, embryo, 446 ; 

 fruit, 428 ; seed, 446. 



Phaseolus multiflorus, ger- 

 mination, 449. (Fig. 377.) 



Phaseolus vulgaris, Fig. 302. 



Phegopteris, 227. 



Philadelpheae, 470. 



Philonotis, sporogonium, 1 80. 



Phloem, 309. 



Phlomis pungens, Fig. 307. 



Phoenix, seed, 430. 



Phoenix dactylifera, Fig. 

 356. 



Phormium, phyllotaxis, 435. 



Phragmidium, teleutospores, 

 128. 



Phycochromaceae, 124. 



Phycocyan, 13, 21. 



Phycomyces,nitens,9i. (Fig. 



54-) 



Phycomycetes, 13, 84, 88 ; 

 divisions, 84; propagation, 

 88. 



Phycophaein, 65. 



Phycoxanthin, 21. 



Pliyleitis, 66. 



Phyllactidium, 125. 



Phylliscum, 124. 



Phyllobium, oogamous fer- 

 tilisation, 27. 



Phyllobium dimorphism, 40, 

 41. 



Phyllocladus, 339 ; female 

 flowers, 330 ; leaves, 321 ; 

 verticillate shoots, 321. 



Phyllocladus trichomanoi- 

 des, 321. 



Phylloglosseae, 196. 



Phylloglossum, 196; germi- 

 nation, 274 ; prothallia, 



275 ; sporangia, 274 ; 

 spores, 275. 



Phylloglossum Drummondii, 



276 note. 



