382 
INDEX 
Serenoa serrulata, 248 
Serpentaria, 26g 
Serphyllum, 344 
Sesame Family, 342 
Sesamum indicum, 342 
Sieve, 77, 78 
Silica, 56 
Siliceous Earths, 190 
Silicule, 163 
Siliqua, 163 
Simaruba amara, 299 
officinalis, 299 
Simarubaceae, 299 
Sinapis alba, 283 
nigra, 283 
Siphonales, 191 
Skunk Cabbage, 249 
Slime Molds, 184 
Smilax, 250 
medica, 251 
officinale, 251, 253 
ornata, 251 
Smuts, 217 c 
Soapwort Family, 306 
Soft bast, 105 
Solanaceae, 337 
Solaneae, 150 
Solanin, micro-chemic test for, 54 
Solanum N. F., 339 
carolinense, 339 
Dulcamara, 339 
Solitary crystals, 55 
Sorbinose, 46 
Soredia, 229 
Sorghum, 46 
Sorosis, 165 
Sorus, 240 
Sour Gum, 32's 
Soy Bean, 292 
Spadix, 139 
Spathe, 139 
Species, 2 
Spermacia, 220 
Spermagonia, 220 
Spermatocyte, 20 
Spermatophyta, 241 
outline'of, 4 
Spermatozoid of fern, 21, 22 
Spermoderm, 168 
Sperms, 194 
Sphagnales, 233 
Sphagnum acutifolium, 233 
squarrosum, 233 
Spicebush Family, 278 
Spigelia, 329 
marilandica, 330 
Spike, 139 
Spinach, 271 
Spine, 99 
Spirilla, types of, 176 
Spirillum, 176 
cholerae asiaticae, 179 
obermeieri, 179 
Spirochasta, 176 
Spirogyra, 188, 189 
Spirosoma, 176 
Sporangiophores, 196 
Spore, 19 
brand, 218 
Sporogonium, 232, 236 
Sporophore, 220, 222 
Sporophyte, generation, 13-20 
Spruce Gum, 244 
Spurge Family, 303 
Spur shoot, 24 
Spurs, sepaline, 144 
Staff Tree Family, 304 
Stage micrometer, n 
Stain, for “acid proof” bacteria, 181 
Van Ermengems flagella, i8t, 182 
Staining, 9 
of bacteria, 179-182 
Stamen System, 147 
Stamens, color of, 148 
connation of, 148 
definite, 147 
diadelphous, 148 
didynamous, 148 
epigynous, 148 
gynandrous, 148 
