464 



INDEX AND GLOSSARY 



Toad-flax, 19, 22, 244, 405, Fig. 544; 



flower, 145; fruit, Fig. 281; pollination, 



137, Fig. 227. 

 Toadstools, 187. 

 Tobacco, 251, 271, 411. 

 Tomato, 4, 75, 251, 410; fruit, 160; 



-potato graft, 28. 

 Tooth-wort, 366, Fig. 266. 

 Torus: part or organ to which the parts 



of the flower are attached; upper end of 



the flower-stalk, (268). 

 Touch-me-not, 166, 375, Fig. 449. 

 Toxylon, 347, Fig. 510. 

 Tracheids, 281. 

 Tradescantia, 264, 265, 266, 276, 335, 



Fig. 43S; stomates, 299. 

 Tragopogon, 434. 

 Trailing stems, 14, Fig. 18. 

 Transpiration: giving off of water, (157, 



166), Figs. 128, 129. 

 Trees: plants that produce one main 



trunk and an elevated head, (15); 



and wind, 213, Figs. 379-381; forms of, 



64, Figs. 111-113, 116-119; roots, 7. 

 Trifolium, 382, Fig. 527. 

 Trillium, 145, 233, 332, Fig. 244. 

 Trimerous: in 3's, (291). 

 TropKolum, 374. 

 Trumpet-creeper, 10, 113, 160, Figs. 12, 



285. 

 Truncate: squared as if cut off, (211), 



Fig. 154. 

 Trunk, form of, 65. 

 Tsuga, 326, Fig. 484. 

 Tuber: short congested part, (78). 

 Tuberose, 337. 

 Tulip, 330. 



Tulip-tree, leaf, Fig. 154; seed, 168. 

 Tumble-grass, 170. 

 Tumble-weeds, 170. 

 Tunicated bulb, 33. 

 Turnip, 33, 251, Fig. 47; fruit, 160; 



root-hairs, 12; starch in, 31. 

 Turtlehead, 406. 

 Tussilago, 442. 

 Twiners, 112, 115. 

 Twin-leaf, 360. 

 Type, 236. 



Ulmus, 346, Figs. 507-509. 



Umbel: corymbose cluster with branches 



of about equal length and arising from 



a common point, (255). 

 Umbellet: secondary umbel, (255), 

 Umbelliferse, 121, 122, 247, 397. 

 Uncinula, 189. 

 Undergrowth, 232. 

 Undulate: wavy, (212). 

 Uredospore, 192. 

 Urtica, 348. 

 Urticacete, 345. 



Utricularia, 71, 207. 



Uvularia, 332. • 



Vaccinium, 424. 



Vacuole, 264. 



Valves: separable parts of a pod, (312) = 



Variation, 236. 



Variety, 236. 



Vascular, 263, 278, 282. 



Vase-form trees, 64, Fig. 112. 



Vaucheria, 186, 187, 263, Figs. 342, 343. 



Velum, 201. 



Velvet leaf, 373. 



Venation: veining, (203). 



Venus' looking-glass, 430. 



Verbascum, 298, 405. 



Verbena, 403; cutting, 25, Fig. 37. 



Verbenaceae, 403. 



Vernonia, 445. 



Veronica, 408. 



Verticillate: with three or more leaves or 



flowers at one node, (113). 

 Vervain, 403; family, 403. 

 Vetch, 251, 381; nodules on root, 78. 

 Vetchling, 381. 

 Viburnum, 429. 

 Vicia, 381. 

 Vigna, 384, Fig. 532. 

 Vinca, 419. 

 Violaceas, 369. 

 Violet, 3, 233, 249, 369; cleistogamous, 



140, Fig. 236; seeds, 166; family, 369. 

 Viper's bugloss, 415. 

 Virginia creeper, tendril, 113, 114, 117, 



Fig. 175. 

 Virgin's bower, 359. 



Wahoo, 294. 



Wake-robin, 332. 



Wallflower, fruit, 160; hairs, 298. 



V/alnut, 155; buds, 37, 138; inflorescence, 



121, Fig. 190. 

 Wandering Jew, 335. 

 Water arum, 328. 

 Water cress, 367. 

 Water hoarhound, 400. 

 Waterleaf, 415; family, 415. 

 Water-lily, 3, 98, 205, 207, 361; family, 



361; and mineral nutrients, 69, 75; 



fungi, 266. 

 Watermelon, 251. 

 Watersprout, 54. 

 Wax-work, twiner, 115. 

 Weeds, 220, 230, 241. 

 Weigela, 61, 429. 

 Wheat, 77, 152, 221, 242, 249, 250, 254; 



field, 68, 225, Fig. 384; flower, 151, Fig. 



259; germination, 173; inclusions, 276, 



Fig. 445; India, 350; starch, 274, 275; 



roots, 7; rust, 189, 190, Figs. 352-357. 

 Whiteweed, 150, 242, 438, Fig. 189. 



