INDEX. 



979 



Tomelia fragrans=Philodenclron pertusum. 



temperature within spathe, i. 501. 



Torsion, and phyllotaxis, i. 407. 



— and twining, i. 683. 



— of climbing stem, i. 686. 



— of fibrous strands in nutating stems, i. 683. 



— of leaf-stalks, i. 417, 418. 

 Torus. See Floral receptacle. 

 Tournefort, synoptical classification, ii. 601. 

 Tournefortia, buds on leaf-cuttings, ii. 43. 

 Toxicodendron, distribution of se.xes, ii. 297. 

 Tozzia alpina, stamen, ii. 91. 

 Trabeoilse, of Isoetes sporangia, ii. 717. 

 Trachefe, name of wood-vessels given from 



erroneous view of function, i. 276. 

 Tracheides, function of, i. 277. 



— mode of sap conduction, &c., i. 277. 



— name of wood-cells given from erroneous 



view of function, i. 276. 



— nature of wall, i. 277. 



— of Coniferai, ii. 720. 

 Trachyte, i. 83. 



— mountains, sand at base, i. 82. 

 Tradescantia, absorbent cells, i. 600. 



— allurement by petals, ii. 171. 



— anthocyanin, i. 520. 



— cotyledon in germination, i, 606. 



— edible stamiual hairs, ii. 170. 

 Tradescantia crassula, cross-fertilization, ii. 



308. 



duration of blossom, ii. 214. 



Tradescantia Virgiuica, cross-fertilization, 

 ii. 308. 



duration of blossom, ii. 214. 



germinating seed, i. 599. 



opening and closing, ii. 212. 



Tragacanth bushes. See Astra/jalus. 

 Tragacanth-shrubs, spiny, i. 435. 

 Tragacanth acei, geographical distribution, 



habitat, spines, i. 447. 

 Tragopogon, aestivation, ii. 210. 



— capitiüa closing and pollination, i. 741. 



— flowers after pollination, ii. 286. 



— geitonogamy, ii. 319. 



— laticiferous tubes, i. 470. 



— time of closing, ii. 221. 

 Tragus. See Bock. 



Trailing Azalea. See Azalea procumhens. 

 Trametes, nutrition, attacks cell-walls, i. 167. 

 Trametesradiciperda.SeePo?i/i)ori(so)ireosi(.s. 

 Transference of pollen, by explosive appa- 

 ratus, ii. 265. 



by percussive apparatus, ii. 262. 



Transformation, of reserve substances, i. 601. 

 - progressive, by inherent forces, ii. 596. 

 "Transitional forms" of Viola really hybrids, 



ii. 584. 

 Transmission of water, centrifugal, i. 94. 



centripetal, i. 94. 



Transpiration, and fall of leaf, i. 355. 



— and growth, i. 513. 



— and root-pressure, i. 282, 366. 



complementary and supplementary 



action of, i. 281. 



— and vascular tissue, i. 347, 362. 



— by cortex of stem, i. 330. 



— cessation for lengthened periods, i. 304. 



— conditions of, in the case of plants with 



rolled leaves, i. 305. 



— contrivances for aiding, in plants with 



roUed leaves, i. 303. 



— current, i. 274. 

 path of, i. 276. 



— effect on cell-contents, general considera- 



tions, i. 274. 



— extent of action, i. 282. 



— factors in, i. 326. 



— form and position of organs of, i. 325. 



— knowledge of conditions regulating, neces- 



sary for cultivation, i. 310. 



— leaf movements in relation to, i. 338. 



— mechanism of, compared to suction-pump, 



i. 281. 



— necessity for diminution, in high Alpine 



plants, i. 315. 



— necessity for means of increasing, in float 



ing leaves, i. 288. 



Transpiration of cladodes, i. 334. 



— of Lianes, i. 347. 



— protection of stomata, i. 290. 



— regulation, i. 234. 

 by stomata, i. 309. 



in deciduous leaves, i. 347. 



— seasonal, i. 347. 



— signification of, i. 283. 



— shape in relation to, i. 327. 



— substitute for, in certain plants, i. 282. 

 Transplanting, of plants, with symbiotic 



mycelia, i. 250. 

 Transport, of food materials, i. 466. 



— of water, i. 366. 

 Trapa, air-bladders, i. 425. 



— cotyledons, ii. 421. 



— floats, i. 638. 



— fruit anchoring, i. 617. 



— heterophyllous, i. 668. 



Trapa natans, calyx and fruit, ii. 434. 



direction of roots on germination, i. 90. 



resting of seeds, i. 563. 



Trapella sinensis, hooked fruit, ii. 872. 

 Traps, advantage of, i. 158. 



— animal, of Dionsea, i. 149. 

 of Lathroea, i. 136. 



of Lathrasa and Pinguicula, i. 137 



— of Bartsia, i. 138. 



— of XJtricularia neglecta, i. 121. 

 Traveller's Joy. See Clematis. 

 Traveller's Tree. See Ravenala Madaijas- 



cariensis. 

 Tree, habit, i. 718. 



— phylogenetic, thallophytic part, ii. 620. 

 "Tree constrictors", i. 704. 

 Tree-ferns, ii. 473. 



aerial roots, i. 714, 753. 



caudex, i. 714. 



mode of growth, i. 659. 



root-hairs of, i. 224. 



tropical, delicacy of outer wall of epi- 

 dermal cells in certain, i. 284. 

 Tree of Chastity. See Vitex Agnus-castiis. 

 Tree of Life. See Arbor vitie. 

 Trees, age, i. 720. 



— and struggle for existence, ii. 515. 



— characteristics of inflorescences, i. 745. 



— tables of dimensions, i. 722. 



— trimming of, on transplanting, i. 92. 



— various, and cold resistance, i. 544. 

 Tremella mesenterica, ii. 687. 

 Trentepohlia, structure, ii. 652. 

 Trentepohlia lolithns, scent, ii. 653. 

 Trentepohlia spongophila, Sumatra, and 



sponge, ii. 653. 

 Trentepohlia umbrina, and Lichen-fungi, ii. 



653. 

 Treub, and chalazogaraic fertilization, ü. 616. 

 Trianon, Botanic Gardens, and natural 



system of classification, ii. 602. 

 Tribulus orientalis, spinose fruit, ii. 875. 

 Triceratium Favus, ii. 626. 

 Trichia clavata, spore-dispersal, ii. 813. 

 Trichoblasts, of Mangrove stilt-roots, i. 761. 

 Trichocline, pericarp mucilage, i. 615. 

 Trichocolea tomentella, stem, i. 591. 

 Trichodesmium Erythrfeum, and "Flowers 



of the Sea", ii. 621. 



reddening of sea, i. 389. 



Trichogyne, of Dudresuaya, ii. 53. 



— of Floridese, ii. 60. 

 Triohomanes Lyallii, ii. 707. 



fronds and sorus, ii. 11. 



Trichomes, dead, restrictive of transpiration, 



i. 313. 

 Trichophilus, in hairs of a Sloth, ii. 627, 653. 

 Trichophyton tonsurans, cause of Herpes, i 



169. 

 Trichostomum tophaceum, lime-incrusted, i. 



260. 

 Tricyrtes pilosa, flower, ii. 181. 



flower and autogamy, ii. 351. 



honey concealment, ii. 182. 



nectaries, ii. 176. 



Tridactylites, autogamy, ii. 337. 



Trientalis Europsea, diiBculty of cultivation, 



i. 113. 



Trifolium, behaviour to own and foreign 

 pollen, ii. 407. 



— corollas after fertilization, ii. 286. 



— floral change of colour, ii. 191. 



— insects and keel movements, ii. 252. 



— leaf, diurnal positions, i. 534. 



— movements of cotyledons, i. 532. 



— scent, ii. 203. 



Trifolium agrarium, fruit, ii. 433. 

 Trifolium badium, fruit, ii. 433. 



inflorescence, ii. 184. 



seed-dispersal, ii. 855. 



Trifolium fragiferum, creeping stem, i. 662. 

 Trifolium hybridum, change of colour, ii. 191. 

 Trifolium nidificum, seed-dispersal, ii. 854. 

 Trifolium pratense, downward pull of roots, 



i. 767. 

 Trifolium repens, antholysis, ii. 83. 



creeping stem, i. 662. 



shade and growth, ii. 506. 



Trifolium resupinatum, scent, ii. 203. 



scent during day, ii. 209. 



Trifolium spadiceum, change of colour, ii. 192. 

 Trifolium stellatum, creeping fruits, ii. 843, 



844. 

 Trifolium tomentosum, wind-dispersal, ii. 



848. 

 Triglochin, dichogamy, ii. 135. 



— dichogamy and cross-fertUization, ii. 314. 



— pollen storing and dispersion, ii. 148. 

 Triglochin BareUieri, flower, i. 646. 

 Triglochin palustre, flowers, ii. 149. 



hooked fruits, ii. 874. 



Trigonellafa3num-grijecum, tubercles on root- 

 fibres, ii. 521. 



Trillium, autogamy, ii. 332. 



— duration of flower, ii. 214. 



— protogynous, ii. 311. 



Trillium giandiflorum, scent, ii. 202. 

 Triopteris bifurca, seed-dispersal, ii. 853. 

 Triopteris brachypteris, pollen-grains, ii. 99. 

 Trioza Ehamni, scroll-gall on Rhanmus 



catharticus, ii. 531. 

 Tripoli, construction through plants, i. 261. 

 Tripoli powder, and diatoms, ii. 614. 

 Tritelia, pollen-grains, ii. 98. 

 Trithrinax aculeata, aerial root spines, i. 433. 

 Triticum and ^gilops, liybridization, ii. 583. 



— and Elymus, hybridization, ii. 583. 



— and Puccinia graminis, ii. 686. 



— pollination, ii. 142. 



Triticum caninum, arched leaf, i. 430. 

 Triticum repens, boring scale-leaves, i. 653. 

 Triticum vulgare, absorbent cells, i. 600. 



grain, scuteUum, &c., i. 599. 



Triumfetta Plumieri, hooked fruit, ii. 873. 

 Trixago, pollen sprinking, ii. 272. 

 Trixago apula, autogamy, ii. 353. 

 Trollius, colcjur of sepals, ii. 183. 



— movemeflts of stamens, ii. 250. 



— nectaries, ii. 179. 



— protection of pollen from wet, ii. 109. 

 Trollius EuropiBUS, effect of mutilation, Ü.517. 

 flower, section, ii. 249. 



scent, ii. 201. 



sheltering of pollen, ii. 110. 



Tropieolum, cotyledons, i. 608; ii. 421. 



— fading of flower, i. 743. 



— leaf-stalk tendrils, i. 692. 



— nectary, ii. 177. 



— pollen-grains, ii. 98. 



— ringed tendrils, i. 694. 



— venation, i. 632. 

 Trop:eolum tnajus, seedling, i. 607. 

 Tniflle. See Tuber. 

 Truflle-fruit, ii. 678. 



Trumpet hyph«, of Laminaria, ii. 662. 

 Trumpet Tree. See Catalpa syriiujcafolia. 

 Tschitscherboden, interior of Istria, absence 



of Heaths, i. 307. 

 Tsuga Douglasii, intermediate characters, ii. 



725. 

 Tuber, morphological value, Ii. 6. 



— nature of, i. 651. 



Tuber melanosporuni, ii. 681. 

 Tuberacea;, description, ii. 678. 

 Tubercle, of Phylloglossum, ii. 715. 



