492 



INDEX 



Stem, function of, 38; types of, 37-50. 



Stems, climbing, 40. 



Stems, coiling, 41. 



Stems, crown or acanlescent, 42, 43. 



Stems, decumbent, 42. 



Stems, definite and indefinite growth, 



49. 

 Stems, elongation, 21; direction 



growth, 20, 23, 25. 

 Stems, growth of, 49, 50. 

 Stems, structure, 51-60. -^_ 

 Stems, twining, 41. 

 Sterigmata, 293, 294. 

 Stigma, 143. 



Stink horn fungi, 299, 300. 

 Stipe, 293. 



Stipules, 66, 70, 71, 74. 

 Stolon, 41. 

 Stomates, 83-85. 

 Stomates, number of, 95. 

 Stone fruit, 188, 192. 

 Stone mountain, 444. 

 Stoneworts, 228. 

 Strangling roots, 29. 

 Strawberries, 41, 195, 406. 

 Streptococcus, 135. 

 Strobilus of club moss, 346-348. 

 Style, 143. 



Succulent stems, 45, 46. 

 Sucrose, 18. 



Sugar, 18, 97-107; test for, 18. 

 Sugar beet, 18. 

 Sugar cane, 18, 398. 

 Sugar maple, 18, 412. 

 Sulphates, 118. 

 Sulphur, 15, 117. 



Sumac, buds and shoots of, 67, 68. 

 Sundew, 81, 82. 

 Sunflower, 153-15?, 4iQ- 

 Sunflower stem, structure of, 56-58. 

 Sweet potato, 30, 45. 

 Swimming spores, 222. 

 Symbiont, 125. 

 Symbiosis, 124-127, 270. 

 Symbiosis, antagonistic, 125. 

 Symbiosis, contact, 125. 

 Symbiosis, mutualistic, 125. 

 Synergids, 382-384. 

 Syringa, 416. 



Taka diastase, 134. 

 Tangero, 412. 

 Tap roots, 27. 

 Taraxacum densleonis, 419. 



Taraxacum taraxacum, 419. 



Taxodium, 442. 



Taxus, 196, 359, 388. 



Taxus canadensis, 359. 



Tea family, 415. 



Teleutospore, 281-285. 



Temperature, influence on respira-- 



tion, 112. 



Tendril climbers, 40. 

 Tendrils, 40, 88. 

 Tendrils, irritability of, 81. 

 Tendrils of sweet pea, 88. 

 Tetraphis pellucida, 320. 

 Tetraspores, 242. 

 Thallophyta, 207, 209. 

 Thallophytes, 207, 211. 

 Thallose liverworts, 306. 

 Thea, 415. 

 Theaceae, 415. 

 Theobroma cacao, 414. 

 Thistle family, 419. 

 Tick trefoil, 203, 204. 

 Tilia americana, 413. 

 Tiliaceae, 413. 

 Tillandsia, 273, 400. 

 Tilletia tritici, 278, 279. 

 Tissue, 14, 54-60. 

 Toadstools, 292. 

 Tobacco, 417. 

 Tomato, 194, 195, 416. 

 Tooth fungi, 292, 299. 

 Touch-me-not, 205. 

 Tracheides, 358, 359. 

 Tradescantia, 28, 29. 

 Tragopogon porrifolius, 419. 

 Trametes pini, 132. 

 Transpiration, 90-96. 

 Trees, age of, 442. 

 Trichodesmium erythraeum, 231, 

 Trichogyne, 225, 240. 

 Trifolium, 410. 

 Trillium, 41. 

 Triticum ovatum, 393. 

 Tropaeolum leaf, 73. 

 Tropophytes, 429. 

 Trumpet creeper, 29. 

 Tryptic ferment, 134. 

 Tuber, 44. 



Tubular flowers, 153, 154. 

 Tundra, 272, 273, 450. 

 Turgescence, 34. 

 Turgor, 35, 215.^ 

 Types of vegetation, 425. 

 Typhoid fever, 136-139. 



