INDEX. 



265 



Pinanga, branching, 109-110. 



Pinguicula, fusion of cotyledons, 

 191 ; single cotyledon, 215. 



Pinnule, prothallus from, 141. 



Pinus, fasciated shoot (fig.), 86; 

 proliferation of short-shoot, 102, 

 176, 232 ; foliar organs of short- 

 shoot, 102 ; primordial foliage, 

 175-176, 232; phyllody of scale- 

 leaves, 158 ; staminody of needle, 

 185 ; fusion of fleshy scale-leaves, 

 192-194; fusion of needles, 194; 

 several cotyledons, 216 ; mono- 

 phylla, two needles, 222, 232. 



Piper, stemless seedling, 239. 



Pistil, adventive shoots in, 138. 



Pisum, ring-fasciation, 90. 



Pitcher, on ovule, 138 ; divided, 169; 

 on cabbage-leaf, 196 ; of Pelar- 

 gonium, 224. 



Pitcher-plant, forked leaf, 169. 



Pith, shoots arising from, 131. 



Placenta, adventive buds on, 138. 



Plagiobryum, double capsule, 59. 



Planera, symmetrical leaf, 166. 



Plantago, phyllody of bracts, 153 ; 

 simplified leaves, 191. 



Plantain, phyllody of bracts, 153 ; 

 simplified leaves, 191. 



Platycerium, root-shoots, 128, 134 ; 

 forked leaf, 174. 



Pleiotomy-theory of fasciation, 93. 



Pleurotus ostreatus, concentric pileus, 

 34. 



Plum, root-shoots, 127. 

 Podalyria, simple leaves, 173. 

 Pogonatum, double sporogomum, 59. 

 Poinsettia, coloured bracts, 188. 

 Polycardia, adnation of foliage-leaf, 

 209. 



Polygonum, fusion of shoots, 119- 

 120 ; laminar enations, 199-200 ; 

 syncotyly, 215. 



Polypodium, leaf-shoots, 134 ; laci- 

 niate leaf, 164. 



Polyporus, forked, 17 ; superior hy- 

 menium, 26 ; concentric pileus, 34 ; 

 incrusted forms of, 34. 



Polystichum, apogamy, 140; apos- 

 pory, 141. 



Polytrichadelphus (Moss), sympodial 

 branching, 42. 



Polytrichum, proliferation of bran- 

 ches, 42 ; leaf-enations, 49 ; ad- 

 ventitious rhizoids and protone- 

 mata, 51 ; proliferation, 54 ; di- 

 vision of flower, 55 ; double sporo- 

 gonium, 59 ; double egg- cell, 60. 



Poppy, entire leaves, 191. 



Populus, erect branches, 123 ; shoots 

 from cambium, 129. 



Porphyrocodon, bracteate inflores- 

 cence, 154. 



Postgenital fusion of roots, 70 ; of 

 shoots, 118. 



Potamogeton, axillary stipule, 203. 



Potato, fasciated tuber, 85 ; axillary 

 tubers, 108 ; adventive tuber- 

 shoots, 130-131 ; phyllody of scale- 

 leaves, 156 ; adventitious leaves 

 on, 245. 



Potentilla, auricles of leaf, 171 ; 



divided epicalyx, 172. 

 Pottia, leaf-enations, 49. 

 Pratella campestris, unequal forking, 



16. 



Preissia, adventitious shoots, 43 ; 

 fasciation, 54 ; androgynous in- 

 florescence, 56. 



Prepinus, its short- shoot, 103. 



Primordial leaves of pine, 103, 175- 

 176. 



Primula, trigonal fasciation, 88 ; 



proliferation, 100. 

 Pringsheim's researches on mosses > 



52-53. 



Progressive changes, 5, 182. 



Proliferation, floral, 4 ; in fungi, 18 ; 

 in shoot of Mosses, 41 ; of rhizoid 

 in Liverworts, 50 ; adventitious, 

 in Dandelion, 91 ; of shoots, 1C0 ; 

 median, 100 ; of short-shoots, 102 ; 

 axillary, 108; conclusions on, 112- 

 113 ; of bulbil, 160 ; of cone, 188. 



Proserpinaca, juvenile foliage, 178. 



Prothallus, adventitious roots on, 77 ; 

 adventitious shoots on, 139 ; ad- 

 ventitious, 140. 



Protobasidiomycetes, 30. 



Protonema, 49-53. 



Psalliota sylvicola, proliferation, 19. 



Psathyra gyroflexa, hydnoid hy- 

 menium, 34. 



Pseudo-stipules, 190. 



Psilotacese, leafless rhizome of, 105. 



Pteris, leaf-shoots, 134; apogamy, 

 140 ; apospory, 141. 



Pterygoneura, leaf-enations, 49. 



Ptilium crista-castrensis (Moss), pro- 

 liferation of branches, 42. 



Quercus, laciniated leaf, 164. 

 Quillwort, sporophyll- shoot, 139. 



Radial shoot, from dorsiventral, 223. 

 Radish, fasciated root, 67 ; syn- 

 cotyly, 215. 

 Rafnia, simple leaves, 173. 



