952 



INDEX. 



Gnapbalium Leontopodium, hairiness and 

 habitat, i. 316. 



hüira, i. 321. 



Gnaphaliutii luteo-album, gall of Kutyloina 



Aschersonii, &c., ii. 521. 

 Gnapbalium tomeutosuiu, hairs, u. 330, 321. 

 GnetacesB, description, ii. 726. 



— embryo development, ii. 437. 



— Endlicher's grouping, ii. 604. 



— seed-coata of, ii. 441. 



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

 Gcebel, classification of Thallophytt-a, ii, 606. 

 Gcetbe, i. 6. 



— attitude towards Linuean system, ii. 287. 



— hia typical plant, i. 12. 



— on seed-dispersal, ii. 833. 



— treatise on metamorjibosis, i. 10. 

 Gold Ferns. See Gymnoi/ranone. 

 Gold of Pleasure. See Camelina sativa. 

 Golden Rod. See Solidago. 



Golden Saxifrage. See ChrysospUnium. 

 Gomontia polyrbiza, life-cycle, ii. 651. 

 Gomphonema capitatum, ii. 626. 



— colonies, i. 535. 



Gonatonema, aplanospore formation, ii. 658. 

 Goneoclinic hybrids, ii. 559, 537. 

 Gongora galatea, twisting of ovary, ii. 224. 

 Gonidia, of Lichens, ii. 692. 

 Goniolimon, absorptive organs, i. 234. 

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

 GoodeniaccEB, ii. 767. 



Goodyera repens, habitat and foliage, i. 110. 

 Gooseberry. See Rihcs Qrossnlaria. 

 Gorteria ringens, colour-contrast in flower, 



ii. 190. 

 Gossypium Barbadense, hairy seeds, ii. 855. 

 Gossypium herbaceum, fruit and seeds, ii. 



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 inLorantbaceee, 



i. 213. 

 GramineEB, ii. 719. 



— attacked by Smut-fungi, ii. 674. 



— brood-bodies, ii. 29. 



— caryopsifl, 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. 



— poUination, ii. 133, 140, 141. 



— substratum, ii. 498. 



— venation, i. 634. 



Grammatocarpua volubilis, nutation, i. 683. 

 Grammatophora serpentina, ii. 626. 

 Grammitidese, tribe of Polypodiaceae, ii. 706. 

 Grammoptera, and Listera, ii. 256. 

 "Grandes espöces", ii. 581. 



Granite, i. 83. 



Granulöse, 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 Graminece 



— anthocyanin and elevation, i. 522. 



— aqueous mantle of assimUating 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. 



— trabeculiB in green cells, i. 374. 



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

 Grass-tree, Australian. Sec XunthorrlKa 



hastilis, PI. XVI. 

 Grass Wrack. See Zostera. 

 Gravitation, force to be overcome in ascent 



of crude sap. i. 269. 

 Grayneas, 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. 331. 



— Algaa. See Chlorophycem. 



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 towanls light, i. 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. 



Grimniia, 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. 

 Grimmiae, 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 Liihospcnmim. 

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

 Ground Ivy. See Glechoma hederacea. 

 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 



locaUties, i. 306. 

 Grubbiaceje, ii. 754. 

 G^chnitzthal (Tyrol), i. 65. 



— changes in flora of, ii. 910. 



— Kemer'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 plants, bidden and unbidden, ii. 221. 

 Gulf Stream, blueness, i. 389. 

 Gulf-weed. See Sargassum bacci/erum. 

 Gum-arabic, source, i. 458. 



Gum-resin, water retention, i. 330. 

 Gum-tragacanth, source, i. 458. 

 Guttifene of Braun, ii. 605. 

 Gymnadenia, ii. 737. 



— and Noctufe, 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 uocinatus, habitat, i. 118. 

 Gymnocladus, i. 488. 



— bud-scales, i. 626, 



Gymnocladus canadensis, leaf, diurnal posi- 

 tions, i. 534. 



reserve-buds, ii. 32. 



separation-layers, i. 360. 



Gymnogramme, sorus, ii. 706. 



Gymnosperma;, 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 content« to 



germinated macrospore. ii. 478. 



— of Endlicher, &c.. ii. 604. 



— pollination, ii. 419. 



— j)rotection of ovule, ii. 72. 

 GymnoHporangium, teteutospores, &e., ii. 687. 

 Gymnosporangium clavaria-'forme, &c.,ii.519, 



521. 

 Gymnosporangium juniperinum.hetercecisni. 



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. 

 Gypsophila 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, absori'tion 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 bifolia, flower and pollination, 

 ii. 225. 227. 



nocturnal perfume, ii. 208. 



poUinia, ii. 256, 



scent, ii. 201. 204. 



Habenaria chlorantha, rostellum, ii. 255. 

 Habenaria Hookeri, specific distinction from 



H. montana. ii. 256. 

 Habenaria montana. poUinia, 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, fraukenias, &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. 



Hiematochrome, of eye-spot, ii 629. 



HffimatococcuB, reason of name, ii. 631. 



Htematococcus pluvialis. See Spharella. 



Hairiness of plants, in relation to habit and 

 climate, i. 316. 



Hair-mosses. See Polytrichum. 



Hairs, absence of, in plants with incrusta- 

 tions, i. 313. 



— actinia-Uke, 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. 



— do", air-containing, chief means of proteo 



tion from undue evaporation, i. 317. 



