426 



INDEX. 



Rivularia 369, 401 



Robinia, thorns 130 



Root 65; adaptations 156; ad- 

 ventitious 267 ; aerial 324 ; 

 cage 200, 201; cap OS, 70, 71; 

 climbers 331 ; differences 

 from shoot 85 ; fleshy 77 ; 

 float 77; hairs GO, 70; hairs 

 and soil 154', hairs, solvent 

 action 155; origin from leaves 

 139 ; parasitic 3J9 ; pressure 

 156: pressure, apparatus for 

 157; primary 65; secondary 

 67 ; tap 324 ; tendrils 78 ; 

 thorns 78 ; tubercles 336 ; 

 woody 76 



Rose, flower S60; leaves 12~ ; 

 prickle 10,S; seedling IIS 



Rotation of protoplasm igi 



Runner 90, 265 



Rye, daily period of growth 

 IS 5; stem IS/f 



Sage, anther S4-7 

 Salts in water 154, 164 

 Salvinia, sporangium 235 

 Saprolegnia, zoospores 213 

 Saprophytes 161 

 Sarcina 11 

 Sargassum 37, 38 

 Saxifrage, flower 300 

 Scales 320, 32;.'; leaf 130 

 Scarlet runner, motor organs 



2015 

 Scions 266 



Scutellaria, cortex 109 

 Secretion receptacles 170, 177 

 Sedge, leaf edge SJ/S 

 Sedum, flower 02, 259; offsets 



Seed 296, 407; in angiosperms 

 299; distribution 30b, 361; in 

 gymnusi)ern")S 297 



Seed plants, ovary 290 ; para- 

 sitic 340 ; spermary 280 ; 

 spores and sporangia 234 



Selaginella 386, 406 ; female 

 gametophyte 'J'JI ; male ga- 

 metophyte :i'SJ\ stem 105 



Selection, power of 164 



Sempervivum o'J5 



Sepal 238, 253 



Sex organs 273 



Sexuality, imperfect 269; loss 

 of 293; origin 268 



Shepherd's purse, embryo 66; 

 pistil ~-^~ 



Shoot 82; differences from root 

 85; from leaves 139 ; liver- 

 worts 52; primary 83 



Sleep movements 206 



Soil 153; effect of temperature 

 of 315; effect of physical 

 characters 317; limits of ab- 

 sorption from 155 ; salts in 

 154; water in 154 



Solutions, water 152 



Spadix 256 



Spathe 250 



Spermary 274, 277 



Sperms 270 



Sphseroplea, gametes, 2S6 



Sphagnum, sporophj^te 22S 



Spirogyra 20, 370, 401 ; conju- 

 gating 272 



Splachnum, capsules 5S 



Sporangia 216, 221; of anther 

 247; of fern 350 



Spore 212; chains 217; diagram 

 210 \ germinating 4-2; non- 

 sexual 212; of Penicillium;.^i7; 

 of Pilularia 2lJj.\ protection 

 352; resting 294; sexual 26S 



Sporophylls 131, 230 



Sporophyte 49, 227, 292; fern- 

 worts 62; mosses 5S, 50, 222; 

 shoot 83; seed plants 64 



Spruce, ovaries ^.'lS"^ 



Stamens 235, 236, 245 



Starch, manufacture 167 ; re- 

 serve 7'/.'> 



Stem 96; climbing 99; erect 98; 

 forms of xerophytic 319; of 

 mosses 55, 50; prostrate 98; 

 sections .''.'', 102, lOo, I04, lu5, 

 100, lOS, 114; shape 97; struc- 

 ture 99; twining 99 



Stele, of leaves 136; of root 71; 

 of stem 100, 103 



Stigma 240 



Stimulus 1 88; transmission of 

 I go 



