628 



BOTANY 



Shepherdia, 540 



Shepherd's Needle, Scandix 

 Purse, Capsella 



Sherardia, 589 



Shields of the Cliaraceae, 339 



Shoots, 18-28, 153 ; -apex, *18 ; adventi- 

 tious, 225 ; pole, 227 



Shrubs, 27 



Sicyos, *266 



Sieve-tubes, *77, *85, *102, *103, *106, 

 131, 133 ; -plates, 78, 84 ; -vessels, 

 83, 84 ; parenchyma, 103 



Sigillarieae, 423 ; thickening, 120 



Silene, Silenoideae, 92, *507, 508 



Silica, 82 



Siliceous bodies, 72 ; earth, 314 



Silicon in plants, 172, 175 



Siliculosae, *519 



Siliqua, 459 



Siliquosae, 519 



Silphium laciniatum, 254 



Silver in plants, 172 



Simarubaceae, 535 



Simple leaf, 30 



Sinapis, 519 ; light, *235 



Sinistrorse stem-climber, *261 



Sinuate leaves, 30 



Siphoneae, 325 ; multinuclear, 60 ; tissues, 

 86 ; polarity, 227 ; flow of protoplasm, 

 246 



Siphonogams, 431 



Sirosiphon, 376 



Sisymbrium, 519 



Sium, *548, 549, 550 



Sleep movements, see Nyctitropic 



Slime fungi, Myxomycetei 



Smilax, 466, 468 



Smyrnium, cotyledons, 295 



Snake-root, Polygala Senega 



Snapdragon, Antirrhinum 



Snapweed, Impatiens 



Snowball tree, Viburnum 



Snowdrop, Galanthus 



Snowfiake, Leucojum 



Soapwort, Saponaria 



Sodium in plants, 172, 175 



Soil, absorptive power, 183 



Solanaceae, *579, 580 



Solanin, 74, 205 



Solanum, 581, 582 ; tuber, *24, 261 ; epi- 

 dermis of leaf, *345 ; tuberosum, 582 



Solidago, 598 



Solomon's seal, Polygonatum multiflorum 



Scmchus, 598 



Sorbus, 554 



Soredia, 378 



Scrrghum, 481 ; amylodextrin, 70 



Sorrel, Rumex 



Sorus, 402 



Sow-Thistle, Sonchus 



Spadiciflorae, 470 



Spadix, 461 



Sparassis, 370 



Sparganiaceae, Sparganium, 475 



Spartium, 25 



Spathodea, 193 



Spectrum of chlorophyll, *57 



Specularia, 593 



Speedwell, Veronica 



Spelt, Triticwm Spelta 



Spergula, 508 



Spermaphyte, 301, 432 



Spermatium, 336 



Spermatia, of the Dictyotaceae, 334 ; Red 



Algae, 336 ; Uredineae, 366 ; Fungi, 



380 

 Spermatozoid, 66, 2S1, 302, 318 

 Sperm nucleus, *67 

 Spermogonia, 366, 380 

 Sphacelia, 358 

 Sphaerella, 243, *320, 321 

 Sphaeria, 356 

 Sphaerothallia, 379 

 Sphaerotheca, 352 

 Sphagnaceae, 239, 390, 394 

 Sphagnum, *391, *396 ; cells, 146 

 Spike, 460, *461 

 Spikelets of Gramineae, 478 

 Spilanthes, 599 

 Spinach, Spinacia 

 Spinacia, 507 ; starch, 69 

 Spindle, 30 ; fibres, *61 ; -tree, Bvonymus 

 Spiraea, Spiraeoideae, 554, 555 

 Spiral vessels, 85 

 Spirillum, *11, 309, 312 

 Spirochaete, 309, *312 

 Spirodela, 475 

 Spirogyra, *316, 317 ; cells, *64 ; pyre- 



noid, 71 ; movement, 244 

 Spirolobeae, 519 

 Spirulinae, 244 

 Splachnum, 392 

 Spongilla, 213, 320 

 Spongy parenchyma, 115 

 Sporangium, 303, 318 ; opening, 248 ; of 



the Gyatheaceae, *404 ; Equisetinae, 



413 ; Hydropteridae, 402 ; Marsili- 



aceae, 407 ; Pteridophytes, 399 

 Sporangiophores, 342 

 Spores, 45, 280, 300 ; of the Myxoniycetes, 



50 ; thickening, 76, 78 ; desiccation, 



179 ; dissemination, 248 

 Sporidia, 362 

 Sporocarp, 406 

 Sporogonium, 384, 388, 392 

 Sporophyll, 33, 399, 429 

 Sporophyte, 398 

 Spring wood, 123 

 Spurge, Euphorbia 

 Spurrey, Spergula 

 Stability of the plant-body, 164 

 Staehys, 587 



