796 



BOTANY 



Sleep-position, 357 



Sliding growth, 48, *150 



Slime fungi, Myxomycetes 



Smilax, 725, 749 



Smut Fungi, Ustilagineae 



Sodium, 240 



Soil, power of absorption of, 242 



Solanaceae, 696 



Solanum, 696, *697, 699 ; tuber, *177 



Solerina, 474 



Solidago, 716 



Sols, 15 



Sonneratia, *167 



Sorbus, *660, 661 ; hybrid, *318 



Soredia, 471 



Sorrel, Rumex acetosa 



Spadiciflorae, 737 



Spanish Pepper, Capsicum annuum 



Sparassis, 463 



Sparganiaceae, 737 



Spartium, 672, 673 



Species, 322 ; origin of, 206, 326 



Spermatogenous cell, 561 



Spermatophyta, 539, 542 ; sexual repro- 

 duction, 200 



Spermatozoids, 199, 369, 565 ; chemo- 

 taxis, 331 ; of Zamia, *563 



Spermogonia, 455 



SpJiaeria, 442 



Sphaerococcus, 427 



Sphaero-crystals, 34 



Sphaeroplea, 404 



Sphaerotkeca, 440, 441 



Sphagnales, 493 



Sphagnum, *490, 493 



Sphenophyllaceae, 502 



Sphenophyllinae, 522 



Sphevophyllum, *522 



Sphenopteris, 536 



Sphere-crystals, 28 



Spike, *126 



Spinach, Spinacia oleracea 



Spinacia, 627 



Spiraea, *660 



Spirillum, 370, *371 



Spirodinium, 387 



Spirogyra, 395, *396 ; cell of, *25 



Spirophyllum, 376 



Spirotaenia, 393 



Splachnum, 494 



Splint-wood, 158 



Spongy parenchyma, 113 



Sporangial spores, 195 



Sporangium, 195, *509 ; cohesion mechan- 

 isms, 334, *335 



Spores, 193, 195, 369 



Sporidium, 455 



Sporodinia, 434, *435 



Sporogonium, 196 ; hygroscopic move- 

 ments, 334 



Sporophylls, 197 



Sporothecae, 501 



Spring wood, 153, 154 



Stachys, 695 



Stamens, 197, 540, 546 



Staminodes, 546 



Stangeria, 589 



Stapelia, *174, 690 ; pollination of, 556 



Staphylococcus, 374 



Starch, 32, 252, *253, 264 ; assimilation, 

 32 ; reserve, 32 



Starch grains, *33 



Starch sheath, 94, 102 



Statolith-hypothesis, 347 



Statoliths, 346 



Stelar theory, 106 



Stele, 106 



Stellaria, 627 



Stem, primary internal structure of, 92 



Stemonitis, *382, 384 



Stem-tendrils, 182, *182 



Stem-tubers, 177 



Sterculiaceae, 650 



Stereoine, 60 



Stereum, 463 



Stigma, 201, 548 



Stigmatomyces, *450 



Stimulus, 337 ; conduction of, 361 ; move- 

 ments, 337 



Stinging Nettles, Urtica 



Stink-horn, Ithyphallus impudicus 



Stipa, section of the leaf, *172 



Stipules, 108 



Stock, Matthiola 



Stomata, 51, *52, 230, 231, *246 



Stomatal apparatus, 51, 52, *53 



Stoneworts, Characeae 



Storage parenchyma, 148 



Stratification, *35, 41 



Stratiotes, 194, 721 



Strawberry, Fragraria 



Strelitzia, 745 ; ornithophilous flower of, 

 *557 ; pollination of, 556 



Streptochaeta, 732 



Streptococcus, 373, *374 



Striation, *37| 



Strickeria, *443 



StrophantJms, 689, *692 



Struggle for existence, 212 



Struthiopteris, 508 ; spermatozoid, *510 



Strychnos, 688, *689 



Style, 548 



Styracaceae, 686 



Styrax, 686 



Suberisation, 38, 39 



Subtending leaf, 121 



Succisa, 707, *709 



Succulent stems, *174 



Suction force, 237 



Sugar-cane, Saccharum ojficinarum 



Sugars, 28 



Sulphur bacteria, 254, 274, 376 



