260 



INDEX. 



Encephalartos, adventitious roots, 

 74; terminal sporophyll, 238. 



Enchanter's nightshade, horizontal 

 shoot, 122. 



English elm, compound leaf, 165; 

 symmetrical leaf, 167. 



Entelechy, 8. 



Epiascidia, 199. 



Epicalyx, divided, 172; its nature, 

 172. 



Epicotyl, adventitious leaves on, 244. 

 Epiphyllous flowers, 209. 

 Equisetum, phyllody of bracts, 154 ; 



torsion of stem, 232. 

 Erect shoots, 123. 



Eremostachys, fused seedlings, 94 ; 

 syncotyly, 215 ; spiral phyllotaxis, 

 220. 



Eriophyes, cause of witches' brooms, 

 129; cause of yew-gall, 223. 



Eriopus, rhizoids of sporogonium, 53. 



Erythrochiton, adnation of foliage- 

 leaf, 209. 



Eucalyptus, fused branches, 118 ; 



single cotyledon, 220. 

 Eucamptodon, adventitious gemmae 



(apospory), 47. 

 Euchlaena, ancestor of Maize, 112. 

 Etwnyrnus, adventive embryo, 139. 

 Euphorbia, fused seedlings, 94 ; phyl- 

 lody of bracts, 153 ; reappearance 



of bracteoles, 155. 

 Eurhynchium, reduction of sexual 



organs, 58. 

 Evening primrose, suppression of 



internodes, 116-117. 

 Evolution of plant-organs, 1. 

 Exeter elm, erect branches, 123. 

 Exoascus, cause of witches' brooms, 



129. 



Expansion-theory of fasciation, 92. 

 Extra-axillary branch, 101, 119- 

 120, 133. 



False-acacia, forked leaflet, 171. 

 Fan-palm, branching, 111. 

 Farmer on factors of organization, 

 10. 



Fasciation in fungi, 15, 17, 86 ; of 

 root, 67 ; of stem, 81 ; fan-shaped, 

 86 ; in Algse, 86 ; mechanical 

 causation, 86-87 ; trigonal, 88 ; 

 ring-, 89 ; causes of, 91 ; simplest 

 case, 94 ; true nature of, 94 ; 

 physiological causation, 93 ; and 

 leaf-cresting, 173. 



Fastigiate trees, 123-124 ; yew, 223. 



Feather-elm, compound leaf, 165. 



Fegaiella, adventitious shoots, 44, 46. 



Fennel, forked root, 67. 



Fern, leaf -shoot, 134 ; forked frond, 

 168, 237 ; crested frond, 171 ; an- 

 cestral frond, 202. 



Ficus, fusion of roots, 70 ; ascidium, 

 198-199 ; laminar enations, 200. 



Fissidens, adventitious buds, 43 ; 

 leaf-enations, 49. 



Fission of leaves, 163-175, 216-217, 

 233,235; terminal, 168; of leaflet, 

 170-171 ; facial, 204. 



Flower on tendril, 109 ; in bulb-scale 

 axil, 112 ; in leaf-axil, 112. 



Foeniculum, forked root, 67. 



Foliage-leaves, reappearance of, 154 ; 

 rejuvenescence of, 175 ; squamody 

 ofj 183 ; pampinody of, 183 ; 

 bracteody of, 184 ; petalody of, 

 1 84 ; sporophyllody of, 185 ; 

 staminody of, 185 ; carpellody of, 

 186 ; simplification of, 189 ; fusion 

 of, 191, 224, 234 ; enations and 

 ascidia of, 196 ; adnation to stem 

 and peduncle, 209; to perianth- 

 leaf, 210; change of position, 216 ; 

 fission of, 216, 235; terminal, 

 223-224 ; adventive leaves on, 

 244. 



Fontinalis, branched anther idium, 

 57. 



Forking of fungi, 15, 16; of root, 

 67 ; of stem, 81, 86 ; of leaf, 168, 

 216-217, 221, 236-237; of leaflet, 

 170-171 ; of cotyledon, 174, 215. 



Foveolar hymenium, 25. 



Foxglove, proliferation, 108. 



Fragaria, forked leaflet, 170 ; 5- 

 foliolar variety, 170 ; auricles on 

 leaf-stalk, 170; divided epicalyx, 

 172 ; foliaceous sepals, 172 ; simple 

 leaf, 189. 



Fraxinus, simple and trifoliolate 

 leaf, 189-190; spiral phyllotaxis, 

 218. 



Fritillaria, origin of false whorls, 

 234. 



Fujii on Gingko, 186. 

 Fumariaceae, their tendril, 158. 

 Funaria, forked leaf, 47 ; adventitious 



rhizoids and protonemata, 51. 

 Fungi, 14. 



Funkia, adventive embryo, 139. 



Furze, thorns of, 159. 



Fusion, in fungi, 34; of roots, 70; 

 of shoots, 118-120; of cotyledons 

 and foliage -leaves, 191, 215, 220, 

 234 ; of scale-leaves, 192 ; of bracts, 

 195 ; facial, 207-208, 224. 



Fusion-theory of fasciation, 91. 



