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 and distribution, ii. 577, 



582, 585. 



non-inherited characteristics, 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. 



starch-grains in, ii. 566. 



tendency to vegetative propagation, ii. 458. 



ternary, ii. 560. 



variation, ii. 576. 

 Hydneae, 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. 

 Hydnoracese, 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. Ill, 112. 



sterile flowers, ii. 187. 



Hydrilla, attachment, i. 77. 



spiny leaves, i. 438. 



Hydrilla verticUlata, pollination, ii. 133. 

 Hydrocarbons, nature of, i. 453. 

 Hydrocharidacese, ii. 105. 



distinctive characters, ii. 739. 



pollination, ii. 133. 

 Hydrocharis Morsus-ranee, ii. 739. 

 anthocyanin , 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 repror 

 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. 

 Hydropeltidinze, of Braun, ii. 605. 

 Hydrophyllaceae, ii. 771. 

 HydrophyUum, emerging of leaves from soil, 



i. 639. 



unfolding leaves, i. 351. 

 Hydrophytes, absorption of carbonic acid, i. 



Hydrophytes, saprophytic, non-green, at- 

 tacked by species of same group, i. 170. 



swelling of dead cell-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. 

 Hydroxyl, i. 454. 

 Hydrurus, in cascades, i. 79. 



structure, i. 590. 

 Hygrobise, ii. 784. 



Hygrometer, mericarp of Erodium used as, 



_ ash of, i. 66. 



_ as lime accumulators, i. 260. 



_ attachment in relation to nutntion, 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. 



Hylocomium, ii. 480. 

 Hylocomium splendens, ii. 15, 700. 



habitat, L 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 f ructi 



fications, ii. 491. 

 Hymenophyllacese, absorption-cells in, i. 86. 



description, &c., ii. 705. 



greenness of prothallia and habitat, i 



384. 



in Blue Mountains, Jamaica, ii. 467. 



son, ii. 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. 45L 



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. 



Hypericineaj, pollen-grains, ii. 102. 



~ pericopsis 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 humifusum, weather and auto- 

 gamy, ii. 391. 



Hypericura olympicum, stamen, ii. 87. 

 Hypericum perforatum, autogamy, ii. 340. 

 hypertrophy, caused by Fungi, ii. 519. 

 Hyph. fungal attacking plants, 1. 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, L 589. 



of Empusa Muscse, ii. 672. 



of Entomophthora, ii. 672. 



of Erysiphesa, ii. 59. 



prey upon cell-walls, &c., i. 16 



gymbiosis with rooU of Phanerogam* 



i. 249. 

 tips of, decomposing power, to., L 164. 



lyphas of Lichen, chemical and mechanical 

 action, L 257. 

 of Zygomycetes, ii. 673. 

 fyphtene coriacea, caiulrx, i. 714. 

 Hyphtene thebaica, inflorescence. L 745. 



- - Nile, caudei 



Hypheothrix. schizomyoetous member of 



sub-aqueous Lichen-like plant*, i. 248. 

 lyjihodromous venation, i. 636. 

 lypuosporangium, of Botrydium. ii. 643. 

 iypnum cordifolium, home of, L 105. 

 I > i-nuin faluatuin, lime incrusted. 1. MO. 

 Iypnum fluitans, *c.. and hybridization, ii. 



583. 

 Hypuum giganteum and H. sannentosom, 



home of. i. 106. 

 lyimum mollusc-tun, absorption of aqueous 



vapour, i. 218. 



Hypnurn rugosum. parthenogenesis, ii. 464. 

 lyj.num tri-iuctrom and H. Crista-cs*t- 



rensis, habitat, i. 109. 

 Hypnum uncinatum and H. reptile, habitat, 



i. 109. 

 Hypochwris, autogamy, ii. 372, 375. 



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

 Hypochlorin, from chlorophyll. L S7t 

 Hypocotyl. i. 655. 



and cotyledon-stalks, relative proportions, 

 1.621. 



buds on, ii. 28. 



functions, i. 650. 



- of Rhizophora, i. 602, 804. 

 Hypocraterifonn, applied to flowers. U. UL 

 Hypodenna Lauri. habitat, I. 118. 

 Hyssopas officinal!*, colour and bee*, ii. 195. 

 HysterophyU, of Endlicher. it 604. 



L 



Iberis amara, light and growth, U. 508. 



-- peripheral flowers, ii. 186. 



-- umbellate raceme, U. 184. 



Iberis gibraltarica, peripheral flowers, ii 



186. 



Iberis umbellata, peripheral flowers, ii. 186. 

 Ice, as preservative agency, L 281 



in frozen plant, i. 540. 



melting by plant growth, L 500. 

 Iceland Moss. Bee Crtraria Wamfica. 

 Ice-plant. BM M uembnp*tkim*m crittmt- 



{{num. 



Ichneumon, pollinates Listera, IL 256. 

 Ichneumon-fly, protection of bud-gall again* 



ii. 542. 



Ichthyosoma. See SarcophyU MNjnrfMa. 

 Idioplasm, views regarding, U. 498. 

 flex Aqulfolium, bristle-like teeth, L 433. 

 -- cuticle of leaf, i. 310. 

 Eleoebrum, prostrate shoot, L 664. 

 Illecebrum verticillatum. sulMuju 

 tilization, ii. 391. 



' Illegitimate union ", in crossing, ii. 40! 

 Illicium anisatum, follicle, U. 431. 



[llicium religiosum, poisonous, ii. 488. 



[Humiliation, adaptation to. L 394. 



- bright, effects on plants. IL 407. 



- effect of varying intensity, 1. 38L 



varied adaptation of leaves to, L 4 

 Imagination, value of, i 17. 

 Imbibition, freedom of. 1. 88. 

 Immortelle. See also JMte*r**owiar<m. 



hairy, time of appearance in dry regions, 



1.318. 



hairy covering in summer, i. 3 

 Impatiens. and insect visits, iL . 

 -cleistogaroy. H.393. 



pollen deposition, U. 277. 



- root-hairs, L 91. 



_ - cross-fertilization, U. 308. 



ImpaUens Noli-tangere. cleistogamy, Ii. 391 



__ cross-fertilization, ii. 308. 



__ leaf and illumination, L J8. 



-- seed-dispersal, ii. 835. 



__ theltering of pollen, U. 108, 109. 



