INDEX. 



955 



Hybrids, corxiitions of formatioo. ii. 404. 



— doubling of llowere, ii. 576. 



— factors in sterility, ii. 578. 



— tsvm racod and species, ü. 581. 



— goneoclinic, ii. 559. 



— indumenta, characteristics of, ü. 564. 



— in relation to grafting, i. 215. 



— juxtaposition of paruutal characters in, ii. 



561. 573. 



— minute structure, ii. 565. 



— misconceptions concerning, ii. 577. 



— misstAtements concerning, ii. 557. 



— natural occurrence and distribution, ii. 577. 



582,585. 



— non-inherited characterifftics, ii. 574. 



— parent proportions in. ii. 558. 



— permanence of, ii. 587. 



— potential fertility, ii. 579. 



— produced by grafting, ii. 569. 



— pseudo-hermaphrodite flowers in, ii. 578. 



— Btarch-grains in. ii. 566. 



— tendency to vegetative propagation, ii. 458. 



— ternary, ii. 560. 



— variation, ii. 576. 

 Hydneje, appearance of. t. 112. 



— hymeoium, ic, ii. 688. 



Hydnora Africana, South Africa, t. 199. 

 Hydnora Americana. South Brazil, i. 199. 

 Hydnora triceps, South Africa, i. 199. 

 HydnoraceiB, ii. 762. 



— anthocyanin, i. 483. 



— nature of scents, ii. 199. 

 Hydnum. raising power, i. 514. 

 Hydnum imbricatum, ii. 21. 685. 



respiratory heat, i. 498. 



Hydra, symbiosis with plants, i. 254. 

 Hydrangea Japonica, sterile flowers, ii. 187. 

 Hydrangea quercifolia, protection of pollen 



from wet, ii. 111. 112. 



sterile flowers, ii. 187. 



HydriUa. attachment, i. 77. 



— spiny leaves, i. 433. 



Hydrilla verticillata. pollination, ii. 133. 

 Hydrocarbons, nature of, i. 453. 

 Hydrocharidaceie. ii. 105. 



— distinctive characters, ii. 739. 



— pollination, ii. 133. 

 Hydrocbaris Morsus-raofe, ii. 739. 

 anthocyanin, i. 521. 



formaiion of winter-buds. Ü. 804. 



habit, i. 666. 



leaf and transpiration, i. 288. 



leaf-rosettes, i. 412. 



— — position of stomata on leaves, i. 2S0. 



protective isolation by water, ii. 234. 



sprouting of winter-buds, U. 805. 



venation, i. 633- 



Hydrocotyle Asiatica. venation, i. 631. 

 Hydrocotyle vulgaris, entire plant, ii. 789. 

 Hydrodictyaceze. ii. 640. 



— description, ii. 639. 

 Hydrodictyea;, ii. 606. 



Hydrodictyon, KJebs* observations on repro- 

 duction, ii, 482. 



— life-his*.ory. ii. 640. 



— multiplication, i. 538. 



— reproduction, i. 574. 



— thallldium, il. 23. 

 Hydrodictyon utriculatum. U. 24. 640. 



swarming of protoplasm, i. 36. 



Hydrogen, combined with carbon, i. 453. 

 Hydropel tidinaj. of Braun, ii. 605. 

 Hydrophyllaceai. ii. 771. 

 Hydrophyllum. emerging of leaves from soil, 



L639. 



— unfolding leaves, i. 351. 

 Hydrophytes, absorption of carbonic acid. i. 



367. 



— ash of. L 66. 



— u lime accumulators, i. 260. 



— attachment m relation to nutritfon, t 77. 



— floating contrivances, i. 638. 



— five and submerged, i. 76. 



— mechanical tissue, i. 735. 



— nutrition, i. 77. 



— parasites on, i 169. 



— re<^iuire larg« supply of food-salts, L 78. 



Hydrophytes, saprophytic, non-green, at- 

 tacked by spfcies of same group, i. 170. 



— swelling of dead cell-membranes ami 



retention of mud, i. 267. 



— unicellular, movements and light, i. 382. 

 ~ venation, i. 636. 



— where very abundant, i. 104. 

 Hydropterides, ii. 7Ü9. 710. 



— of Brauu, ii. 605. 



— Sorts of spores, ii. 704. 

 Ilydrutropism. in roots, i. 775. 

 Hydroxyl, i. 454. 

 Hydrurus, in cost-ades, i. 79. 



— structure, i 590. 

 Hygrobiaj, ii. 784. 



Hygrometer, mericarp of Erodium used as, 



i. 619. 

 Hylocomium, ii. 480. 

 Hylocoraiura splendens. ii. 15. 700. 



habitat, i. 109. 



liymenial layer, and respiration, i. 498. 

 Hymenium. luminous, i. 503. 



— of Amanita, portion, ii. 21. 



— of Hymenomycetes, ii. 688. 

 Hymenocystis. protection of sporangia, ii. 13. 

 Himenomycetes, as Lichen-fungi, ii. 693. 



— basidia, ii. 680. 



— characteristics, ii. 687. 



— luminous, i. 502. 



— range of forms, ii. 688. 



— respiration experiments, i. 498. 



— similarity of spawn, dissimilarity of fructi- 



fications, ii. 491. 

 Hymenopbyllace», absorption-cells in, i. 86. 



— description, &c., ii. 705. 



— greenness of prothallia and habitat, i. 



384. 



— in Blue Mountains, Jamaica, ii. 457. 



— sori, li. 10. 



Hymenoptera and aminoid scents, ii. 207. 



— and Calceolaria Pavonii, ii. 379. 



— eaters of pollen, ii. 167. 



— gall-formation, ii. 527. 

 Hyoscyamus, calyx and fruit, ii. 434. 



— corolla and autogamy, ii. 366. 



— cross-fertilization, ii. 305. 



— pollen deposition, ii. 278. 

 Hyoscyamus albus and frost, ii. 407. 

 Hyoscamus niger and cattle, i. 451. 



— — odour, i. 431. 

 Hyi>anthium, iorms of, ii. 780. 

 Hypecoum, corolla and autogamy, ii. 369. 



— nectaries, ii. 178. 



Hypecoum grandiflorum, autogamy, details, 

 ii. 370. 



flower, ii. 181. 369. 



Hypecoum pendulum, weather and auto- 

 gamy, ii. 391 



Hj-pecoum procumbens, hooey concealment, 

 ii. 182. 



Hypericineae, pollen-grains, ii. 102. 



Hj-pericopsis persica, salt on leaves and stem, 

 i. 236. 



Hypericum, alluring floral tissue, ii. 170. 



— autogamy, ii. 340. 



— hybrids, ii. 584. 



— staminal insect platform, ii. 230. 



— twisting of internodcs, i. 417. 

 Hypericum huniifusum, weather and auto- 

 gamy, ii. 391. 



H>T)ericum olympicum, stamen, ii. 87. 

 HyiK;ricum i)urforaium. autogamy, ii. 340. 

 Hypertrophy, caused by Fungi, ii. 519. 

 Hyphre, fungal attacking plants, i. 105. 



attraction by ovules, ii. 414. 



constitute mycelium, i. 99. 



development from spore, i. 163. 



mechanical changes duo to, i 265. 



mechanical force, i. 513. 



modes of growth, i. 689. 



of Empusa Musca], Ü. 672. 



— — of Kntonioiihtbora, U. 672. 

 of Erysipheaj. ii. 59. 



prey upon cell-walls, &c., i. 167. 



symbiosis wiih roots of Phanerogams, 



L249. 

 tip« of, decomposing power, tic, I. IC4. 



Hypha) of Lichen, chemical and nifchanical 

 action, i. 257. 



— of Zygomycetes, ii. 673. 

 Hyphaine coriocea. caudex, i. 714. 

 Hyphiene thebaica. Inflorescence, i. 745. 

 Nile, caudex, i. 714. 



Hyphcothrix, schizomycetous member of 



sub-aqueous Lichenliko plants, i. 248. 

 HyphfKlromous venation, i. 636. 

 llypnosporaugium, of Botrydium, ii. 643. 

 Hypuvim cordifolium, home of, i. 105. 

 Hyprmm falcatum, lime incrusted. i. 260. 

 Hypnum fluitans, &c., and hybridization, U. 



583. 

 Hypnum giganteum and H. sarmentosum, 



home of. i. 105. 

 Hypnum molhiscum, absorption of aciueous 



vapour, i. 218. 

 Hypnum rugosum. parthenogenesis, ii. 464. 

 Hypnum triquetrum and H. Crista-cast- 



rensis. habitat, i. 109. 

 Hypnum uncinatum and H. reptile, habitat, 



i. 109. 

 Hypochasris, autogamy, ii. 372. 375. 



— maculata, opening and closing, ii. 218, 217. 

 Hypochlorin, from chlorophyll, i. 372. 

 Hypocotyl, i, 655. 



— and cotyledon-stalks, relative proportions, 



i. 621. 



— buds on, ii. 28. 



— functions, i. 650. 



— of Rhizophora. i. 602. 604. 

 Hypocrateriform, applied to flowers, ii. 111. 

 Hypoderma Lauri, habitat, i. 118. 

 Hyssopus ofiiciuahs, colour and bees, ii. 195. 

 Hysterophyta, of Endlicher, ii. 604. 



I. 



Iberis amara, light and growth, ii. 503. 



peripheral flowers, ii. 186. 



umbellate raceme, ii. 184. 



Iberis gibraltarica, peripheral flowers, ii. 



186. 

 lljeris umbellata. peripheral flowers, ii. 186. 

 Ice, as preservative agency, i. 262. 

 ~ in frozen plant, i. 540. 



— melting by plant growth, i. 500. 

 Iceland Moss. See Cttraria islandica. 

 Ice-plant. See Mesanbri/anthemum ciHstal- 



linum. 



Ichneumon, pollinates Listera, ii. 256. 



Ichneumon-fly, protection of bud-gall against, 

 li. 542. 



Ichthyosoma. See Sarcophyte eanguinea. 



Idioplasm, views regarding, ii. 493. 



Ilex Aquifolium, bristle-like teeth, i. 433. 



cuticle of leaf, i. 310. 



Illecebrum, prostrate shoot, i. 664. 



Illecebrum verticillatum, sub-aqueous fer- 

 tilization, ii. 391. 



" Illegitimate union", in crossing, ii. 405. 



Ilhcium anisatum, follicle, ii. 431. 



Itlicium religiosum, poisonous, ii. 488. 



Illumination, adaptation to, i. 394. 



— bright, effects on i)liUit8, ii. 407. 



— effect of varying intensity, i. 381. 



— varied adaptation of leaves to, i. 423. 

 Inuigination, value of. i. 17. 

 Imbibition, freedom of, i. 88. 

 Immortelle. 8qc nho Hdichrj/Bumarenarium. 

 Immortelles, ii. 766. 



— hairy, time of appearance in dry regions, 



i. 318. 



— hairy covering in summer, I. 319. 

 Impatiens, and insect visits, !i. 223. 



— cleistogamy, ii. 393. 



— pollen deposition, ii. 277. 



— root-hairs, i. 91. 

 Impatiens glandutigera. i. 656. 



cross-fertilization, ii. 306. 



Impatiens Noli-tangere, cleistogamy, ii. 394. 

 cross- fertilization, ii. 306. 



leaf and illumination, i. 286. 



seed-disi>erHal, ii. 835. 



sheltering of pollen, ii. 108. 109. 



