584 
cotyledons, 187-192; of woody 
Dicotyledons, 197-203; pros- 
trate, 173; pruning, 221-225; 
structure, 192-203; underground, 
177; use in propagation, 225- 
232. 
Stigma, 33, 33*. 
Stink Horn Fungus, 392, 392*. 
Stinking Smut, 395. 
Stipe, 386. 
Stipules, 235, 234*. 
Stock, 227. 
Stolons, 361. 
Stomata, 184; function, 247; location, 
248, 249; structure, 247, 246.* 
Stoneworts, 329; described, 332-335. 
Storage tissue, 132. 
Strap-shaped flowers, 25, 24*. 
Strawberry fruit, 79, 79*. 
Strengthening tissue, 129, 128*, 129*, 
130* 
Strobilus, 437, 439, 441, 447, 452. 
Stromata, 371, 371*. 
Structure, of cells, 112-116, 114*, 
115*; of herbaceous dicotyle- 
donous stems, 192-197; of leaves, 
242-252; of monocotyledonous 
stems, 187-192; of roots, 143- 
150; of stems, 182-203; of woody 
stems, 197-203. 
Struggle for existence, 517; described, 
521. 
Strychnine, 283. 
Style, 34, 33*. 
Suberin, 276. 
Sugar cane, plants, 496, 496*; propa- 
gation, 226, 228*, 229*. 
Sugar, formation, 253; kinds, 277; 
transformation into starch, 255. 
Sulphur, as a soil constituent, 157. 
Summer spores of Rust, 397, 397*. 
Sundew, 272. 
Survival of the fittest, 517; described, 
522. 
Suspensor, 466, 466*. 
Swamp societies, 505. 
Sweet Cherry, 212, 211*. 
Sweethearts, 240*. 
INDEX 
Sweet Potato family, 490. 
Sweet Potato, propagation, 164, 164*- 
Symbiosis, 156. ; 
Sympetalae, 472; families, 489-495. 
Synangium, 430. 
Systematic Botany, 3. 
Tap-root, 139, 139*. 
Taphrina prunt, 376. 
Tassel of Corn, 16*, 17*. 
Tartaric acid, 285. 
Taxonomy, 3. 
Teleutospores, 397, 398*. 
Temperature, in relation to germina- 
tion, 89, 90; in relation to growth 
of stems, 218; in relation to 
photosynthesis, 260; in relation 
to transpiration, 263. 
Temporary roots, 103. 
Terminal buds, 206. 
Terminal flowers, 27, 27*. 
Tertiary roots, 150. 
Testa, 55. 
Tetraspore, 329. 
Tetrasporic plant, 328. 
Thalictrum, 467. 
Thallophytes, 292; described, 296— 
405; Algae, 296-329; Bacteria, 
341-350; Basidiomycetes, 382- 
404; Blue-green algae, 297-301; 
Brown Algae, 318-324; Flag- 
ellates, Diatoms, and Stone- 
worts, 329-335; Fungi, 351-405; 
Green Algae, 301-318; ‘Lichens, 
379-382; Myxobacteria, 350; 
Red Algae, 324-329; Sac 
Fungi, 363-379; Slime molds, 
336-341; Water Molds, 353-363. 
Thorns, 272, 271*. 
Tillandsia, 162. 
Timothy heads, showing improve- 
ment, 529. 
Tissues, general view, 126-134; ab- 
sorbing, 131, 131*; conductive, 
130, 130*; food-making, 132, 132"; 
meristematic, 126, 126*; of 
leaves, 242-252; of roots, 146- 
150; of stems, 182-203; protec- 
