INDEX. 



267 



Sea-kale, shoots from pith, 131. 



Sedum, dichotomy of stem, 82-83 ; 

 leaf -shoots, 137. 



Selaginella: adventitious roots, 75; 

 short rhizophores, 75 ; dichotomy 

 of stem, 82 ; nature of rhizophore, 

 104 ; tetrachotomy, 104 ; prolifera- 

 tion of rhizophore, 105-108 ; erect 

 rhizophores, 124 ; development of 

 sporangium, 127 ; foliar-base, 127 ; 

 homo- and heterophylly, 177 ; 

 structure of flower, 188. 



Selenia, bracteate inflorescence, 154. 



Seminiferous scale and double - 

 needle of Sciadopitys, 103. 



Sepalody of bracts, 188. 



Sexual generation of Bryophytes, 41 ; 

 adventitious growths in, 139-146. 



Sexual organs of Bryophytes, multi- 

 plication and reduction of, 57. 



Shield fern, apogamy of, 140. 



Shoot of Bryophytes, 41 ; of vascular 

 plants, 80 ; proliferation of, 100 ; 

 simplification of, 115 ; suppression 

 of, 116-117; fusion of, 118-120; 

 horizontal, 122-123; erect, 123- 

 124; inverted, 124; winding, 124; 

 adventitious, 126-146. 



Short- shoot, its proliferation, 102, 

 176. 



Silver-fir, suppression of branches, 

 117. 



Silver-weed, auricles of leaf, 171. 



Simple leaves, division of, 163-175. 



Simplification, 5; of stem, 115-120; 

 conclusions on stem, 120 ; of leaf, 

 182, 189 ; conclusions on, 201. 



Sinapis, fused seedlings, 94. 



Singular becoming, 8. 



Sisostrema, structure of hymenium, 

 33. 



Sisymbrium, root-shoots, 127 ; ovary- 

 shoots, 138-139. 



Snapdragon, winding shoots, 124; 

 double leaf, 225. 



Snowberry, laciniate leaf, 164. 



Snowdrop, proliferation of bulb, 101. 



Snowflake, proliferation of bulb, 101. 



Solatium, leaf-shoots, 136. 



Sorus, prothallus on, 141. 



Sparassis, superior hymenium, 27. 



Spathe, foliaceous, 153; derived from 

 leaf, 184. 



Spathiphyllum, foliaceous spathe, 

 153. 



Spearwort, horizontal shoot, 122. 

 Sphagnum, double capsule, 59. 

 Spines, cause of, 158. 

 .Spirxa, auricles of leaf, 171. 



Splachnum, abortive capsule, 61. 



Sporangium, shoot replacing, 139 ; 

 prothallus on, 141. 



Sporocarps, from leaflets, 185. 



Sporogonia, double, 58. 



Sporophyll, adventive shoots on, 1 34, 

 139; foliaceous, as ancestor, 201 . 



Sporophyllody, of scale-leaves, 163 ; 

 of foliage-leaves, 185. 



Sporophyte generation, of Bryo- 

 phytes, 58. 



Spruce, root on cone-scale, 77 ; sup- 

 pression of branches, 117 ; prostrate 

 shoot, 122; erect branches, 123; 

 bracteody of scale-leaves, 188 ; 

 staminody of bracts, 188 ; andro- 

 gynous cone, 188. 



Spurge, fused seedlings, 94; phyllody 

 of bracts, 153. 



Squamody of foliage-leaves, 183. 



St. Hilaire on abnormalities, 6. 



Stachys, fission of leaves, 217 ; fusion 

 of leaves, 220. 



Stahfs researches on mosses, 52. 



Staminody of scale-leaves, 163 ; of 

 foliage -leaves, 185; of bracts, 188. 



Stangeria, shoots from pith, 131. 



Star of Bethlehem, bulbils, 135, 161. 



Statolith-theory, 125. 



Stem, one of the categories, 1, 2 ; 

 adventitious roots on, 74; of vas- 

 cular plants, 80 ; differentiation, 

 80 ; fasciation of, 81 ; proliferation 

 of, 100; simplification of, 115; 

 suppression of, 116-117 ; fusion of, 

 118-120 ; shoots, 128 ; adnation of 

 leaf to, 209. 



Stenochltena, sporangiferous scale- 

 leaves, 163. 



Sterculia, fused embryos, 94. 



Stigma on foliage-leaf, 187 ; on 

 bract, 189. 



Stimulus and structural modifica- 

 tion, 11. 



Stipe, the stem, 14. 



Stipules, of epicalyx, 172 ; dialysis 

 of, 172 ; of Bobinia, 159 ; phyllody 

 of, 160 ; origin of, 191. 



Stock, reappearance of bracts, 154. 



Stolon, 122 ; of Circsea and Mentha, 

 157 ; of Circsea, 183. 



Stone-hore, dichotomy of stem, 82. 



Stone-pine, proliferation of short- 

 shoot, 102 ; primordial foliage, 

 176. 



Stopes on branches of Cycas, 133. 

 Strawberry, forked leaflet, 170 ; 



simple leaf, 1 89. 

 Strelitzia, union of leaves, 225 



