404 



INDEX 



Scapania, 349 

 Scenedesmus, 172, 332 

 Scheuchzeriaceae, 357 

 Schistostegiaceae, 350 

 Schizaeaceae, 352 

 Schizogoniales, 332 

 Schulze's reagent, 35 

 Scirpus, 300, 358 

 Sclerenchyma, 32 

 Scleroderma, 345 

 Sclerodermataceae, 345 

 Scleroderniatales, 344 

 Scleroderris, 341 

 Sclerotinia, 342 

 Scotch Pine, 279 

 Scouring-Rush, 264 

 Scrophularia, 367 

 Scrophulariaceae, 367 

 Scrophulariales, 367 

 Scytonema,. 165, 331 

 Seytonemas, 165 

 Scytonemataceae, 165, 331 

 Scytopetalaceae, 362 

 Sea Ferns, 192, 336 



Girdle, 201 



Lettuces, 173 



Mosses, 338 



Palm, 201 



Tree, 201 



Umbrellas, 192 

 Secondary leaves, 281 



thickening, 60 

 Secotium, 345 

 Secretory cells, 66 

 Sedges, 298, 358 

 Seed, 271 



distribution, 324 



-ferns, 272, 354 



scale, 278, 279 

 Selaginella, 268, 354 

 Selaginellaceae, 267 

 Selaginellales, 354 

 Self fertilization, 323 

 Sematophyllaceae, 351 

 Senecio, 376 

 Senecionidaceae, 376 

 Sennas, 368 

 Sepals, 286 

 Septoria, 239, 347 

 Sequoia, 278, 356 

 Seta, 250 



Sexual cells, 112 



reproduction, 109, 170, 171 

 Shade plants, 320 

 Shield-Ferns, 259 

 Shoot, 329 



Side Mosses, 252, 351 

 Sieve tissue, 38 

 Sigillaria, 269 

 Sigillariaceae, 354 

 Silene, 306, 364 

 Silicic acid, 140 

 Silks (of maize), 298 

 Silphium, 375 

 Simarubaceae, 363 

 Simblum, 345 

 Simple Algae, 170, 332 



pistils, 286 

 Sinapis, 364 

 Siphonales, 334 

 Siphonophyceae, 184, 334 

 Sirobasidiaceae, 346 

 Sisyrinchium, 360 

 Size of Cells, 7 

 Skeletal tissue, 46 

 Slime Algae, 163, 330 

 Slit-Fungi, 218, 343 



-Lichens, 218, 342 

 Smuts, 347 

 Snapdragon, 304, 367 

 Snowberry, 315 

 Snow-on-the-Mountain, 322 

 Soft Red Seaweeds, 339 

 Solanaceae, 366 

 Solanin, 148 

 Solanum, 366 

 Soleniaceae, 334 

 Solidago, 376 

 Solutes, 81 

 Solutions, 81 

 Somatic cells, 112 



division, 112 

 Sonneratiaceae, 369 

 Sorbinose, 146 

 Sorbite, 142 

 Sordariaceae, 343 

 Soredia, 215 

 Sori, 232 

 Spadix, 300 

 Spanish needles, 325 

 Sparganiaceae, 357 

 Spathe, 296 



