INDEX. 



955 



Hybrids, conditions of formation, ii. 404. 



— doubling of flowers, ii. 576. 



— factors in sterility, ii. 578. 



— from races and species, ii. 581. 



— goneoclinic, ii. 559. 



— indumenta, characteristics of, ii. 564. 



— in relation to grafting, i. 215. 



— juxtaposition of parental characters in, ii. 



561, 573. 



— minute structure, ii. 565. 



— misconceptions concerning, ii. 577. 



— misstatements concerning, ii. 557. 



— natural occurrence anddistribution, ii.577, 



582, 585. 



— non-inherited characteristics, ii. 574. 



— parent proportions in, ii. 558. 



— permanence of, ii. 587. 



— potential fertiUty, ii. 579. 



— produced by grafting, ii. 569. 



— pseudo-hermaphrodite flowers in, ii. 578. 



— starch-grains in, ii. 566. 



— tendency to vegetative propagation, ii. 458. 



— ternary, ii. 560. 



— variation, ii. 576. 

 Hydneaj, appearance of, i. 112. 



— hymenium, &c., ii. 688. 



Hydnora Africana, South Africa, i. 199. 

 Hydnora Americana, South Brazil, i. 199. 

 Hydnora triceps. South Africa, i. 199. 

 Hydnoraceae, ii. 762. 



— anthocyanin, i. 483. 



— nature of scents, ii. 199. 

 Hydnuni, 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. Ill, 112. 



sterile flowers, ii. 187. 



Hydrilla, attacliment, i. 77. 



— spiny leaves, i. 438. 



Hydrilla verticillata, poUinatiou, ii. 133. 

 Hydrocarbons, nature of, i. 453. 

 Hydrocharidacene, ii. 105. 



— distinctive characters, ii. 739. 



— pollination, ii. 133. 

 Hydrocharis Morsus-ranse, ii. 739. 

 antliocyanin, i. 521. 



formation of winter-buds, ii. 804. 



habit, i. 666. 



leaf and transpiration, i. 288. 



leaf-rosettes, i. 412. 



position of stomata on leaves, i. 280. 



protective isolation by water, ii. 234. 



sprouting of winter-buds, ii. 805. 



venation, i. 633. 



Hydrocotyle Asiatica, venation, i. 631. 

 Hydrocotyle vulgaris, entire plant, ii. 789. 

 Hydrodictyacese, ii. 640. 



— description, ii. 639. 

 Hydrodictyeae, ii. 606. 



Hydrodictyon, Klebs' observations on repro- 

 duction, ii. 482. 



— life-history, ii. 640. 



— multiplication, i. 588. 



— reproduction, i. 574. 



— thallidium, ii. 23. 

 Hydrodictyon utriculatum, ii. 24, 640. 



swarming of protoplasm, i. 36. 



Hydrogen, combined with carbon, i. 453. 

 Hydropeltidinae, of Braun, ii. 605. 

 Hydrophyllacese, ii. 771. 

 Hydrophyllum, emerging of leaves from soil, 



i. 639. 



— unfolding leaves, i. 351. 

 Hydrophytes, absorption of carbonic acid, i. 



367. 



— ash of, i. 66. 



— as lime accumulators, i. 260. 



— attachment m relation to nutrition, i. 77. 



— floating contrivances, i. 638. 



— free and submerged, i. 76. 



— mechanical tissue, i. 735. 



— nutrition, i. 77. 



— parasites on, i 169. 



— require large supply of food-salts, i. 78. 



Hydrophytes, saprophytic, non-green, at- 

 tacked by species of same group, i. 170. 



— swelling of dead ceU-membranes and 



retention of mud, i. 267. 



— unicellular, movements and light, i. 382. 



— venation, i. 636. 



— where very abundant, i. 104. 

 Hydropterides, ii. 709, 710. 



— of Braun, ii. 605. 



— sorts of spores, ii. 704. 

 Hydrotropism, in roots, i. 775. 

 Hydroxy!, i. 454. 

 Hydrurus, in cascades, i. 79. 



— structure, i 590. 

 HygrobisB, ii. 784. 



Hygrometer, mericarp of Erodium used as, 



i. 619. 

 Hylocomium, ii. 480. 

 Hylocomium splendens, ii. 15, 700. 



habitat, i. 109. 



Hymenial layer, and respiration, i. 498. 

 Hymenium, luminous, i. 503. 



— of Amanita, portion, ii. 21. 



— of Hymenomycetes, ii. 688. 

 Hymenocystis, protection of sporangia, ii. 13. 

 Hymenomycetes, 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. 

 Hymenophyllaceae, 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. 



Hypanthium, forms 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 



Hypecoum procumbens, honey concealment, 

 ii. 182. 



Hypericinese, pollen-grains, ii. 102. 



Hypericopsis persica, salt on leaves and stein, 

 i. 236. 



Hypericum, alluring floral tissue, ii. 170. 



— autogamy, ii. 340. 



— hybrids, ii. 584. 



— staminal insect platform, ii. 230. 



— twisting of internodes, i. 417. 

 Hypericum hvimifusum, weather and auto- 

 gamy, ii. 391. 



Hypericum olympicum, stamen, ii. 87. 

 Hypericum perforatum, auloganiy, ii. 340. 

 Hypertrophy, caused by Fungi, ii. 519. 

 Hyphfe, fungal attacking plants, i. 165. 



attraction by ovules, ii. 414. 



constitute mycelium, i. 99. 



development from spore, i. 163. 



mechanical changes due to, i 265. 



mechanical force, i. 513. 



modes of growth, i. 689. 



of Empusa Musc», ii. 672. 



of Entouiophthora, ii. 672. 



of Erysipheaj, ii. 59. 



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



symbiosis with roots of Phanerogams, 



i. 249. 

 tips of, decomposing power, ic, L 161 



Hypbw of Lichen, chemical and m<«haiike^ 



HyW ,-~„-- ! 74S 



HyphiuUir.i. 



sub-aqui" 

 Hyphodromuu- . 

 !ly|)ni>8porttiii;iuiii. -i 1 

 Uypiium conlifulium. I 

 Hypnum fulcatum, Im.. 

 Hypnum fluilaju, ic, ii ,.....,/.,,., „ 



583. 

 Hypnum gigantcum and H. untirnfMum. 



home of, i. 105. 

 Hypnum mulluscum, alaorpUon of ■<iucxnti 



vapour, i. 218. 

 Hypnum rugosum, |>arthenogrnni>, II 464. 

 Hypnum triquetrum and H. CrUUc»*- 



renain, liabitat, i. 109. 

 Hypnum uticinatum and H. reptllr, h^Uut, 



1.109. 

 Hypochajris, autogamy, ii. 372, 375 



— maculata, opening and doling. II 218. 217. 

 Hypochlonn, from chlorLpbyll, i. 372. 

 Hypocotyl, i. 655. 



— and cotyledon-stalks, relative proporUoM, 



1. 621. 



— buds on, ii. 28. 



— functions, 1. 650. 



— of Rhizophora, i. 602, 604. 

 Hypocruteriform, ai>pUed to flowers, II HI. 

 Hypoderma Lauri, habitat, I. 118. 

 Hyssopus oflicinaliB, colour and becji, 11. 195. 

 Hysterophyta, of Endlicher, li 604. 



Iberis amara, light and growth, ii. 508. 



peripheral flowers, li. 186. 



umbellate raceme, ii. 184. 



Iberia gibraltarica, peripheral flowers, U. 



186. 

 Iberis 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 Cdraria itlanJica 

 Ice-plant. See Mnembfyanlkemu.n crufoi- 



linum. 



Ichneumon, poUioates LIstera, 11. 2S6. 



Ichneumon-fly, protection of bud'gallagal net, 

 ii. 542. 



lohthyosoma. See Sarccphytt tinipiinta. 



Idioplasm, views regarding, ii. 493. 



Ilex Aquifolium, bristle-like teeth, 1. 4SS 



cuticle of leaf, i. 310. 



Illecebrum, prostrate shoot, I. 664. 



lllecebrum verticiUatum. sub aqueous fer- 

 tilization, ii. syi. 



" Illegitimate union ", In cnosins. il Ktt. 



Illicium anisatum, follicle, ii. 431. 



lUicium religiosum, |>oisonous, it. 488. 



Illumination, adaptation to, i. 3H. 



— bright, effects on |>Unts, ii. 407. 



— effect of varying intensity, I. SSL 



— varied adopUtion of leaves to, I 423 

 Imagination, value of, I. 17. 

 Imbibition, freedom of. i. 88. 

 Immortelle. See al.io//WicA»>*««orrii«n«m. 

 Immortelles, ii. 766. 



— hairy, time of appearance In dry nfiatm. 



i. 318. 



— hairy covering In summer, I. 319. 

 Impaticns, and insect rUit*, II. 23 



— clcistogamy, li. 393. 



— pollen aciK>sltion, II. 277. 



— roothoirs, I. 91. 

 Iropatiens glonduUgcra. i 6M. 

 cri..<.s fortlllrsti-in. li 306, 



Imiwi'.i' "> . leisuicaoyr. II JH 



c, .. 306. 



;, . I., Law 



t,., . vl3 



shulUrlui ul 1--UCU, U. lOi 109. 



