952 



INDEX. 



Gnaphalium Leontopodium, hairiness and 

 habitat, i. 316. 



hairs, i. 321. 



GnaphaUum luteo-album, gall of Entyloma 



Aschersonii, &c., ii, 521. 

 Gnaphalium tomentosum, hairs, ii. 330, 321. 

 Gnetacese, description, ii. 726. 



— embryo development, ii. 437. 



— Endlicher's grouping, ii. 604. 



— seed-coats of, ii. 441. 



Godetia, viscin of pollen -grains, ii. 101. 

 Goebel, classification of Thallophytes, ii. 606. 

 Gcethe, i. 6. 



— attitude towards Linnean system, ii. 287. 



— his typical plant, 1. 12. 



— on eeed-dispersal, ii. 833. 



— treatise on metamorphosis, i. 10. 

 Grold Ferns. See Qymnogramme. 

 Gold of Pleasure. See Camelina satiAja. 

 Golden Rod. See Solidago. 



Golden Saxifrage. See Chrysosplenium. 

 Gomontia polyrhiza, life-cycle, ii. 651. 

 Gomphonema capitatum, ii. 626. 



— colonies, i. 585. 



Gonatonema, aplanospore formation, ii. 658. 

 GJoneoclinic hybrids, ii. 559, 587. 

 Gongora galatea, twisting of ovary, ii. 224. 

 Gonidia, of Lichens, ii. 692. 

 Goniolimon, absorptive organs, i. 234. 

 Gonium, structure, &c., ii. 631. 

 Goodeuiaceae, ii. 767. 



Goodyera repens, habitat and foliage, i. 110. 

 Gooseberry. See Ribes Orossularia. 

 Gorteria ringens, colour-contrast in flower, 



ii. 190. 

 Gossypium Barbadense, hairy seeds, ii. 855. 

 Goasypium herbaceum, fruit and seeds, iL 



423. 

 Gourd. See Cucurbita Pepo. 

 Graft, relation to stock, ii. 571. 

 Graft-hybrids, ii. 569, 572. 

 Grafting, i. 213, 214. 

 Grafting, perpetuation of hybrids by, ii. 556 



— resemblance to parasitism in Loranthacese, 



i. 213. 

 Gramineee, ii. 719. 



— attacked by Smut-fungi, ii. 674. 



— brood-bodies, ii. 29. 



— caryopsis, ii. 746. 



— cleistogamy in, ii. 392. 



— course of pollen-tubes, ii. 408. 



— dehiscence of pollen-sacs, ii. 93. 



— descriptive details, ii. 745, 746. 



— dichogamy, ii. 140, 312. 



— elevation and coloration, ii. 511. 



— embryo of, ii. 422. 



— from chalk, ii. 613. 



— germination, i. 604. 



— glumes, ii. 434. 



— hybrids among, ii, 583. 



— pollen-grains, ii. 99. 



— pollination, ii. 133, 140, 141. 



— substratum, ii. 498. 



— venation, i. 634. 



GrammatocarpuB volubilis, nutation, i. 683. 

 Grammatophora serpentina, ii. 626. 

 Grammitideae, tribe of Polypodiaceae, ii. 706. 

 Grammoptera, and Listera, ii. 256. 

 "Grandes espfices", ii. 581. 



Granite, i. 83. 



Granulose, formation, i. 459, 460. 



Grapes, and Peronospora viticolo, ii. 670. 



Grape-sugar, decomposition by yeast, i. 506. 



Graphite, origin of, ii. 610. 



Grasses. See also Oraminece 



— anthocyanin and elevation, i. 522. 



— aqueous mantle of assimilating tissue, i. 



369. 



— localization of wax, i, 292. 



— Mediterranean, hairiness of, i. 318. 



— perennial, time of appearance in dry 



regions, i. 318. 



— periodic folding of leaves, i. 339. 



— reed-like, adaptation to wind. i. 427. 



— silicic acid in, i. 67. 



— stomata on leaves, i. 280. 



— trabeculae in green cells, i. 374. 



Grass-leaves, folding of, i. 341, 342, 343. 

 Grass-tree, Australian. See Xantkorrhea 



hastilis, PI. XVI. 

 Grass Wrack, See Zostera. 

 Gravitation, force to be overcome in ascent 



of crude sap, i. 269. 

 Grayness, of shore vegetation, i. 390. 

 Grazing animals and young trees, i. 445. 

 Greek flora, general grayness of, i. 317. 

 Green, intensity of, and illumination, i. 381. 



— Algae. See Chlorophycece. 



zone in sea, i. 390. 



Greenland, winter temperatures, i. 547. 

 Green Laver. See Ulva latissima. 

 Green-rot, of trees, i. 263. 



Green tissue, production of, i. 426. 



— tissues, behaviour towards Ught, 1. 383, 



384. 

 Gregoria, heterostyly, ii. 302. 

 Grevillea, vertical leaf-blades, i. 336. 

 Grew, Nehemiah, figures of plant anatomy, 

 i. 22. 



on crumpled sestivation, ii. 210. 



Grimmia, hybrids in, ii. 583. 



— renders limestone friable, i. 258. 



— vegetative propagation, ii. 458. 

 Grimmia apocarpa, absorption of carbonic 



acid, i. 62. 

 Grimmia Hartmanni, parthenogenesis, ii. 464. 

 Grimmise, collection of dust, i. 266. 



— nutrition, i. 81. 



— special absorptive cells of, i. 218. 



— spore-dispersal, ii. 814. 



Grindelia squarrosa, varnish-like covering, 



i. 313. 

 Gromwell. See Lithospermum. 

 Grooves on stem, and rain-water, i. 95. 

 Ground Ivy. See Olechoma Jiederacea. 

 Groundsel. See Senecio vulgaris. 

 Ground water, inefficiency, &c., ii. 501, 

 Growth and heat, i. 512, 518, 557. 

 ~ and light, i. 518. 



— and periodic movements, ii. 220. 



— and snow-pressure, i. 523. - 



— dependence on water, i. 510. 



— geometrically considered, i. 405, 



— hypothetical mechanism, i. 512. 



— influence of elevation on, ii. 407, 508, 509, 



523. 



— nature of, i. 55. 



— period of, in wettest season in certain 



localities, i, 306. 

 Grubbiacese, ii, 754. 

 Gschnitzthal (Tyrol), i. 65. 



— changes in flora of, ii. 910. 



— Kerner's experimental garden, ii. 453, 



— mechanical force of roots, i. 514. 

 Guard-cells of stoma, i. 280. 



function and structure, i, 308. 



Guelder-rose. See Viburnum Opulus. 

 Guepinia, appearance of, i. 112. 



— shrivelling through loss of water, i. 216. 

 Guests of plania, bidden and unbidden, ii. 221. 

 Gulf Stream, blueness, i. 389. 

 Gulf-weed. See Sargassum bacdferum. 

 Gum-arabic, source, i. 458. 



Gum-resin, water retention, i. 330. 

 Gum-tragacanth, source, i. 458. 

 Guttifen© of Braun, ii. 605. 

 Gymnadenia, ii. 737. 



— and Noctuse, ii. 256. 



— hybrids, u. 563, 583. 



— pollen deposition and retention, ii. 284. 



— spur and honey, ii. 255. 

 Gymnadenia Conopsea, and Nigritella nigra, 



colour of flowers and hybrid, ii. 567. 



capsules in dry and wet weather, ii. 448. 



scent, ii. 201, 203. 



seed, ii. 451. 



Gymnoascus uncinatuB, habitat, i. 118. 

 GymnocladuB, i. 488. 



— bud-scales, i. 626. 



GymnocladuB canadensis, leaf, diurnal posi- 

 tions, i. 534, 



reserve-buds, ii. 32. 



separation-layers, i. 360. 



Gymnogramme, sorus, ii. 706. 



GymnospermEe, absence of fossil connecting 

 links with Phanerogams, ii. 613. 



— classes, ii. 718. 



— development of embryo, ii. 437. 



— distinctive features, ii. 719. 



— fertilization, ii. 418. 



— fruits, ii. 437. 



— homology of embryo-sac and contents to 



germinated macrospore, ii. 478. 



— of Endlicher, &c., ii. 604. 



— pollination, ii, 419. 



— protection of ovule, ii. 72. 

 Gymnosporangium, teleutospores, &c., ii, 687. 

 Gymnosporangiumclavari3eforme,&c.,ii.519, 



521. 

 Gymnosporan^umjuniperinum.heteroecism, 



ii. 686. 

 Gymnostomum, absence of peristome, ii. 703. 

 Gymnostomum curvirostre, lime incrusted, 



i. 260. 

 Gynandrse, floral characters, ii. 736. 

 Gynerium argenteum, pollination, ii. 142 

 Gypsophila, autogamy, ii. 345. 



— nectaries, ii. 176. 



Gypsophila paniculata, inflorescence, i. 738. 

 GypsophUa repens, anthocyanin, i. 522. 



elevation and coloration, ii. 511. 



Gypsum, good for clover, i. 74. 



— in cell, i. 72. 



— on leaves, i. 236. 



Gyrocarpus Asiaticus, seed-dispersal, ii. 853. 

 Gyrogonites, fossil characeous fruits, ii. 661. 

 Gyrophoras, absorption of water, i. 218. 



H. 



Haastia, distribution and appearance, ii. 188. 

 Habenaria, ii. 737. 



— pollen deposition and retention, ii. 284. 



— specific differences and insect visits, ii. 



256. 



— spur and honey, ii. 255. 



Habenaria bifoha, flower and pollination, 

 ii. 225, 227. 



nocturnal perfume, ii. 208. 



pollinia, ii. 256. 



scent, ii. 201, 204. 



Habenaria chlorantha, rostellum, ii. 255. 

 Habenaria Hookeri, specific distinction from 



H. montana, ii. 256. 

 Habenaria montana, pollinia, ii. 256. 



scentless, ii. 204. 



Haberlea, nectary, ii. 175. 



Haberlea rhodopensis, direction of flowers, 



ii. 225. 

 Habitat and greenness, i. 384. 



— and influence on plant form, ii. 497. 



— and permanence of hybrids, ii. 587. 



— and variation, i. 394. 



— influence on anatomy, ii. 511. 



— of epiphytes, i. 222, 325. 



— of tamarisks, frankenias, &c,, extreme 



aridity of, i. 237. 

 Habitats, sorts of, ii. 879, 883. 

 Hacquetia, behaviour of stamens, i. 740. 



— geitonogamy, details, ii. 323. 



— protogynous, ii. 311. 



Hadena and Habenaria bifolia, ii. 256. 



Hsematochrome, of eye-spot, ii 629. 



Hsematococcus, reason of name, ii. 631. 



HEematococcus pluvialis. See Spkcerella. 



Hairiness of plants, in relation to habit and 

 climate, i. 316. 



Hair-mosses. See Polytnchum. 



Hairs, absence of, in plants with incrusta- 

 tions, i. 313. 



— actinia-like, i. 324. 



— air-containing, protective functions, i. 314. 



— articulated, i. 320. 



— branched, i. 323. 



— capitate or glandular, i. 229. 



— cauline of Stellaria media, i. 229. 



— clayey appearance due to, i. 324. 



— covering, i. 321. 



— dry, air-containing, chief means of protec- 



tion from undue evaporation, i. 317. 



