518 



INDEX. 



Thuja occidentalis^ growing apex of 



root, 222 (fig. 88). 

 Tilia europcea, T. parvifolia, structure 



of stem, 153 (figs. 58-63). 

 Tiliaceae, pectose mucilages of, 429. 

 Tissues, considered physiologically, 



199. 



Toadstool. See Amanita. 

 Tobacco. See Nicotiana. 

 Tonoplast (de Vries), 254. 

 Torenia asiatica, pollen-tubes, 392 ; 



fertilisation, 405 (fig. 148). 

 Torus, 76, 145. See also pits. 

 Trachese, wanting in Pinacese, 137. 

 Tracheal plugs (tyloses), 161 (fig. 64). 

 Tracheides (hydroids), 77, 104, 140 et 



seq. t 199. 

 - length of, 161. 



vascular and fibrous, 104, 209. See. 



also vascular bundles. 



Tradescantia virginica, movement of 

 protoplasm in staminal hairs, 38 

 (fig. 14) ; development of pollen- 

 grains, 385 (fig. 141) of pollen- 

 tube, 392 ; stomata, 84 (fig. 30) ; 

 cell and nuclear division, 434 (fig. 

 153) ; direct nuclear division, 456 

 (fig. 160). 



zebrina, protoplasmic circulation, 

 47 ; stomata, 85. 



Trama, 335. 



Transfusion, 106, 123, 167 (fig. 67). 



Transparency, to obtain by glycerine, 

 199 ; turpentine, creosote, car- 

 bolic acid, chloral hydrate, 200. 



to rectify, 210. 

 Transpiration tissue, 198. 



Trianea bogotensis, protoplasmic move- 

 ment in, 48. 



Tricarpellary, 396. 



Triarch vascular bundles of roots, 222. 



Trichomes. See hairs, scales. 



Trilocular (of ovary), 396. 



Triticum durum, starch-grains in, 18 

 (fig. 7). 



repens, Uredo upon, 332. 



vulgare, endosperm of, 29 (fig. 12) ; 



structure of fruit and seed, 30 (fig. 



12), 417 (fig. 151) ; germination, 



421. 



Tritonia, culture of pollen-tubes, 393. 

 Tropceolum majus, chromatophores of, 



54 (fig. 18) ; water-pores (water- 



stomata), 88 (fig. 32). 

 Tube cultures, of Bacteria, 285. 

 Tulipa, development of pollen, 385 ; 



of pollen-tubes, 392 ; structure of 



pistil, 396. 



Gesneriana, ovary, 396. 

 Turpentine, use of, 200, 450. 

 Tyloses. See tracheal plugs. 



Ulothrix, culture of, 252. 

 Unicellular plants, 255-89. 

 Uredineae. See Puccinia. 

 Uredo condition, 332. 

 Uredospores. See spores. 

 Urtica dioica, bristles, 97 (fig. 36); 

 stinging hairs, 95 (fig. 36). 



VACUOLAR membrane, 46, 253. 



Vacuole, 39, 45-6. 



Vallecular canal, 179. 



Vallisneria spiralis, movement of pro- 

 toplasm in leaf, 48 ; chlorophyll 

 in, 53. 



Valve (frustule), of Diatomaceae, 255 

 (fig. 97). 



Vascular bundle, bicollateral bundles, 

 126; cauline bundles, 210; closed 

 bundles, 101, 105 ; collateral 

 bundles, 101, 105, 121 ; develop- 

 ment of, 209 ; foliar bundles, 194, 

 210 ; open bundles, 121 et seq. 

 See also hadrome, leptome, 

 mestome, etc. 



cylinder in roots, 163 et sc,q. 



in root of Acorns Calamus, 165 

 (fig. 66) ; Allium Cepa, 163 (fig. 65) ; 

 Hordeum vulgare, 220 (fig. 87) ; 

 Irits florentfoa, 166 (fig. 67) ; Hn- 

 nunculus repens, 168 ; Ta.rn* l>ac- 

 cata, 169 (fig. 68). 



in stem of Aristolochia Sipho, 131 



(figs. 48, 49) ; Bryonia dioica, 126 ; 

 CheHdonium magus, 124; Ctic/ir- 

 bita Pepo, 126 ; Dracaena rubra, 

 117 (fig. 44) ; Equisetum, 179 

 (fig. 72) ; P.inus sylvestris, 137 (figs. 

 50-7) ; Ranunculus repens, 121 (fig. 

 45) ; Tilia europcea, 153 ; Zca Mais, 

 101 (figs. 40, 41). 



staining, 101 (chlorzinc iodine) ; 



108 (corallin) ; 111 (safranin) ; 110 

 (double staining). 



structure in leaf of Iris floren- 



tina, 114 (fig. 42). 



terminations of, in petals, 199 ; 



in leaves, 199. 



Cryptogams. See Pteridophyta. 

 - tracheides. See tracheides, a Inn 

 spiral vessels, etc., and 104 (foot- 

 note). 



Vaucheria sessilis, 295 ; multinuclear, 

 296 ; sexual reproduction, 296 (fig. 

 110) ; swarm spores, 295 (fig. 109). 



Vegetative - cell, in pollen-grain of 

 Pinits, 369 (fig. 134rZ) ; of Trades- 

 cantia, 385 (fig. 141). 



Vein parenchyma, 198. 



use of term, 198. 



Venter (of archegonium). Sec arche- 

 goninm. 



