422 



INDEX. 



Silica, i. 107 ; ii. 275, 276 

 Silicula, ii. 10, 11, 16,21 

 Siliqua, ii. 9, 10, 11, 12, 16, 21 

 Silk, strength of, i. 63 

 Silky, i. 153 ; ii. 365 

 Silver grain, i. 197; ii. 190 

 Silvery, ii. 370 

 Similary parts, i. 6 

 Simple, ii. 360 

 Simplici, ii. 383 

 Simplicissimus, ii. 360 

 Sinuate, ii. 358 

 Sinuolatus, iL 358 

 Sinus, i. 269 

 Size, ii. 367 

 Sky blue, ii. 371 

 Slashed, i. 272 ; ii. 358 

 Slate grey, ii, 370 

 Slimy, ii. 365 

 Smaragdinus, ii. 371 

 Smoky, ii. 370 

 Smooth, ii. 365 

 Snow-white, ii. 369 

 Soboles, i. 180, 182 

 Soda, ii. 275 



Soil, exhaustion of, ii. 285 

 Solitary, ii. 383 

 Solubility, ii. 7 

 Solutus, ii. 397 

 Sooty, ii. 371 

 Soredia, ii. 118 

 Sori, ii. 95 

 Sorosis, ii. 17, 25 

 Spadiceus, ii. 370 

 Spadix, i. 320, 322 

 Span, ii. 368 

 Sparsus, ii. 381 

 Spathe, i. 311 

 Spathella, i. 313 

 Spatulate, ii. 354 

 Spermaphorum, i. 364 

 Spermatocystidia, ii. 106, 115 

 Spermatocystidium, i. 342 

 Spermidium, ii. 18 

 Spermoderm, ii. 26 

 Sphaerenchyma, i. 21 

 Sphsericus, ii. 347 

 Sphalerocarpium, ii. 17, 24 

 Spheroidal, ii. 348 

 Spherula, ii. 121 

 Spiculate, ii. 364 

 Spike, i. 319, 322, 324 



, compound, i. 324 



Spikelet, i. 311, 320 

 Spilus, ii. 31 

 Spindle-shaped, ii. 348 

 Spine, i. 171 

 Spines, i. 159, 165 



of leaves, i. 302 



Spiny, ii. 363 



Spiral, i. 342 ; ii. 347, 377, 382 



Spiral arrangement of parts, i. 245 



vessels, i. 21, 67, 68 ; ii. 175 



, compound, i. 72 



, simple, i. 72 



Spiraliter contorta, ii. 375 

 Spithama, ii. 368 

 Spithamaeus, ii. 368 

 Splendens, ii. 365 

 Split, ii. 359 

 Spodo-, ii. 370 

 Spongelet, i. 238 

 Spongiolae seminales, i. 163 

 Spongiole, i. 238 

 Spongy, ii. 366 



Sporangia, ii. 95, 105, 114, 123 

 Sporangidium, ii. 108 

 Sporangiolum, ii. 121 

 Sporangium, ii. 107, 115, 121 

 Spores, ii. 85, 95, 121, 238 

 Sporidia, ii. 121, 123 

 Sporidiola, ii. 121 

 Sporocarpia, ii. 98 

 Sporocarpium, ii. 101, 115 

 Sporules, ii. 95, 107, 121 

 Spotted, ii. 372 

 Spreading, i. 268 ; ii. 378 

 Spur, i. 336 

 Spuria, i. 253 

 Spurs, ii. 138 

 Squamae, i. 311 

 Squamelles, i. 311 

 Squamosus, i. 158 ; ii. 365, 382 

 Squamulae, i. 312, 313 

 Squarrose, ii. 382 



slashed, ii. 358 



Squarroso-laciniatus, ii. 358 

 Stalklets, i. 272, 296 

 Stamens, i. 315, 338 



, abortive, i. 339 



Staminidia, ii. 106, 115 



Standard, i. 335 



Starch, i. Ill 



Starry, i. 153 



Starved, ii. 382 



Stellate, i. 153, 154, 159; ii. 362 



Stelliformis, ii. 380 



Stellulatus, ii. 380 



Stem, i. 165; ii. 187 



, aerial, i. 179, 181 



, creeping, i. 180 



, determinate, i. 170 



, indeterminate, i. 170 



, its external modifications, i. 



179 

 , its internal modifications, i. 1 84 



-, its parts, i. 166 



-, subterranean, i. 179 



, virgate, i. 169 



Stem-clasping, ii. 379 

 Stemless, i. 183 

 Stephanoum, ii. 23 



