Sweet Potato, 162, 590 
Sweet Woodruff, 605 
Sweetia panamensis, 539 
Swertia Chirayita, 587 
Syconium, 307 
Fig. of, 290 
Sympetalae, 579 
Symphytum, 593 
Symphytum officinale, 593 
Symplocarpus fetidus, 487 
Syncarp, 471 
Synedra ulna, Fig. of, 352 
Synergids, 292, 474 
Syngenesis, 265 
Systema Naturz, 325 
Systematic Botany, 323 
defined, 2 
Tabacum, 598 
Tabellaria vulgaris, Fig. of, 352 
Tamarack bark, 466 
Tamarind, 301 
Tamarindus, 539, 540 
Tamarindus indica, 540 
Tanacetum, 615 
Tanacetum vulgare, 615 
Tannins, 92 
Tansy, 615 
Tapetum, 67, 278, 280 
Tapioca, 551 
Taraktogenos Kurzii, 565 
Taraxacum, 615 
Taxacea, 465, 466 
Taxies, 32 
Taxodium, 619 - 
Taxonomy, 323 
defined, 2 
Taxus baccata, 467 
canadensis, 467 
Tea, 85, 563 
Tea Family, 563 
Teak-wood, 593 
Teasel Family, 608 
Tecoma radicans, Fig. of seed, 313 
Tectona, 593 
Tegmen, 312 
Tela contexta, 407 
Teleutospores, 401 
Teliospores, 400, 401 
INDEX 789 
Telium, 401 
Telophase, 50 
Temporary mount, technique of mak- 
ing a, 687 
Tendril, defined, 189 
Tendrils, 189 
Terebinthina, 456 
' Canadensis, 466 
Laricis, 466 
Ternstremiaceea, 563 
Terpenes, 97 
Terra Silicea Purificata, 350 
Testa, 312 
Tetrads, 67, 280, 474 
Tetrasporangia, 358 
Tetraspores, 358, 359 
Thalamus, 262, 265 
Thallophyta, 12, 333 
Thallophytes, 12, 333 
Thallus, defined, 12 
Thamnidium, 381 
Thea, 563 
Thea sinensis, 563 
Theacea, 563 
Thelephorales, 403 
Theobroma, 559 
Theobroma Cacao, 559 
Fig. of, 558 
Theophrastus, 1, 323 
Thermogens, 364 
Thermotropism, 32 
Thigmotropism, 36 
Thiothrix, 373 
Thistle, 610, 611 
Thorn, defined, 189 
Throat, 266 
Thuja, 465, 466 
occidentalis, 466 
Thyme, 189, 595 
Thymelaacea, 569 
Thymus Serpyllum, 596 
vulgaris, 595 
Thyrsus, 261 
Tilia, 559 
americana, 559 
Tiliacea, 559 
Tissue, 111 
assimilation parenchyma, 116 
cambium, 114 
