502 



INDEX. 



Niphobohis chinemis, apical cell of, 



248. 

 Niphobolus lingua, apical cell of, 239. 

 Niphobohis rupestris, apical cell of, 



239, 248. 

 Nothochlama, abortive prothallia of, 



197. 

 Nucleus in Abietinese, 400 ; in Juni- 



perus, 400 ; in Pinus, 400 ; in 



Taxus, 400 ; in Thuja, 400. 



Ophioglosseae, 307. 



Ophioglossum, prothallium of, obser- 

 vations of Mettenius upon, 315. 



Ophioglossum pedunculosum, root-buds 

 of, 315. 



Ophioglossum vulgutum, development 

 of vegetative organs of, 312. 



Orthotrichum, calyptra of, 159. 



Orthotrichum affine, development of 

 vegetative organs of, 139. 



Ovules of Coniferse, 400. 



Papillae, marginal, of leaves of Selagi- 

 nella, 380. 



Paraphyses of mosses, 153. 



Pellia epiphylla, 21. 



Perianth, of Alicularia scalaris, 69 ; 

 of Calypogeia Trichomanes, 70 ; of 

 Frullania dilatata, 69 ; of Junger- 

 manniae, 87 ; of Jungermannia bicus- 

 pidata and /. divaricala, 69 ; of 

 leafy Jungermannia?, 68 ; repre- 

 sented in Pellia epiphi/lla by the 

 pouch-shaped covering of the arche- 

 gouium, 33 ; of Radula complanata, 

 68 



Phascum, antheridia of, 152 ; arche- 

 gonia of, 149 ; calyptra of, 159 ; 

 development of fruit of, 156, 157, 

 158, 160 ; development of leaves of, 

 142 ; spore-mother-cells of, 160 ; 

 terminal bud of, 129. 



Phascum bryoides, development of 

 fruit of, 160. 



Phascum cuspidalum,, spore-mother- 

 cells of, 160 ; spores of, 1 64, amoe- 

 boid movements of primordial utricle 

 iu, 163. 



Phascum serratum, pro-embryo of, 172. 



Phyllotaxis in Sphagnum, 136. 



Pilularia, development of fruit, of, 318. 



Pineau, on the development of the 

 embryo in Conifene, 407. 



Pinnae, of frond, formation of, in Pteris 

 aquilina, 209. 



Pinus, anther of, 401; Gottsche on 

 the seed and embryo of, 433. 



Pinus Abies, fecundation of, 418. 



Pinus bulsamea, nucleus of, 400. 



Pinus Canadensis, fecundation of, 418. 



Pinus Larix, fecundation of, 419. 



Pinus Strobus, nucleus of, 400. 



Pinus sylvestris, fecundation of, 417 ; 

 nucleus of, 400. 



Pith of Equisetum, 274. 



Plagiochila asplenioides, cell-multipli- 

 cation in apex of stem of, 442. 



Platycerium alcicorne, germination of, 

 182 ; vegetation of, 251. 



Pocket, of leaves of mosses, 143. 



Pollen, of Abietineae, development of, 

 405 ; Fritzsche's observations on, 

 405 ; of Conil'eree, development of, 

 401, resemblance of vital pheno- 

 mena of, to those of the microspores 

 of Pilularia, &c, 438 ; of Cycadeae, 

 406; of Ephedra, Schachton, 406; 

 development of, in Pinus sylvestris, 

 P. maritima, P. balsamea and P. 

 Larix, 402 ; in Juniperus, Thuja 

 occidenlalis, Abies pectinala, and 

 Picea vulgaris, 405. 



Pollen-tubes of Coniferae, their entrance 

 into the endosperm, 415; develop- 

 ment of free spherical cells in the 

 ends of, 416 ; their penetration into 

 the corpuscula proved by Corda, 432. 



Pollen-tubes in Taxus, Juniperus, 

 Pinus sylvestris, P. Mughus, P. 

 Austriacus, and P. Strobus, 406. 



Poly-embryony of Coniferae, discovered 

 by Robert Brown, 432. 



Polypodiaceae, prothallia, and anthe- 

 ridia of, 186. 



Polypodium aureum, apical-cell of, 

 239, 248. 



Polypodium cymatodes, apical-cell of, 

 239, 248. 



Polypodium Dryopleris, apical-cell of, 

 239 ; arrangement of fronds in, 249. 



Poli/podium punctatum, apical-cell of, 

 248. 



Polypodium punclulatum, apical-cell of, 

 239. 



Polypodium vulgare, apical-cell of, 

 239, 218; arrangement of fronds 

 in, 249. 



Polytrichum, antheridia of, 152 ; 

 archegonia of, 149; development 

 of leaves of, 142 ; terminal bud of, 

 129. 



