INDEX. 



953 



Hairs, edible, of flowers, ii. 169. 



— floccose, i. 324. 



— glandular, absorption of ammonia, i. 65. 

 of Sarracenia, i. 126. 



— multicellular, i. 320. 



— of Aldrovaudia leaf, 1. 153. 



— of leaves, in relation to water-absorption, 



i. 227. 



— on Erodium fruit, i. 620. 



— on foliage, abundance in Mediterranean 



district, &c., i. 317. 



— protection of chlorophyll, i. 392. 

 stomata from wetting, i. 292. 



— protective secretory, ii. 234. 



— protect young foliage-leaves, i. 353. 



— scaly, i. 324. 



— silicic acid in, i. 67. 



— silicifled, i. 440. 



— soft felted, and grazing animals, i. 442. 



— stellate, i. 322 ; ii. 564. 



— stinging, mode of action, i. 439, 442. 



— T-shaped, i. 321. 



— tufted, i. 323. 



— unicellular, i. 319. 



— vesicular, i. 324. 



— which retain moisture, i. 228. 

 Hairy covering and anthocyanin, i. 487. 

 Hakea, leaves of, ii. 751. 



Hakea florida, Australia, protection of 

 stomata from moisture, i. 296. 



stomata, surface view and section, i. 



297. 



Halantium Kulpianum, stamen, ii. 87. 



Hales, Stephen, work on vital phenomena of 

 plants, i. 16. 



Halesia, propagation by root-slips, ii. 28. 



Half-parasitic, i. 180. 



Half-saprophytic, i. 180. 



Halichonckia and Struvia delicatula, ii. 646. 



Halictus, sheltering in Uowers, ii. 163. 



HaUchrys, ii. 664. 



Halimeda, relation to light, i. 388. 



— thallus, ii. 645. 



Halimocnemis, coloured stamen-filaments, 

 ii. 183. 



— pollen and pollination, i. 645. 

 Halimocnemis gibbosa, stamen, ii. 87. 

 Halimocnemis molhssiraa, inflorescence, &c., 



ii. 184. 

 Haller, Historia Plantarum, ii. 1. 

 Halophila, pollen and pollination, ii. 105. 



— sub-aqueous pollination, ii. 739. 

 Halophytes, application of term, i. 74. 

 Haltica Atrop;«, beetle on Deadly Night- 

 shade, i. 431. 



Haminia, stamen, ii. 87. 



Hanburya mexicana, tendril, callus -like 



growths of, i. 697. 

 Haplophyllura, honey protection, ii. 241. 

 Haplophyllum Biebersteinii, autogamy, ii. 



337. 

 Hard bast, i. 469, 474. 

 Hard Fern. See Blechnum Spicant. 

 Hare's-ear. See Biipleurum. 

 Harpagophytum procumbens, hooked fruit 



of, ii. 870. 

 Harpoon fruits, ii. 870. 

 Hart's Tongue Fern. See Scolopendrium 



vulgare. 

 Haustoria, and external stimulus, i. 771 



— application of term in Fungi, i. 164. 



— forms, origin, &c., 1. 754. 



— of Cuscuta, i. 174. 



— of Erysiphese, ii. 59. 



— of Mildews, ii. 677. 



— of Mistletoe, death, i. 210. 



— of parasites, i. 115. 



— of Peronosporese, ii. 56. 

 Hawk-moth, ii. 153. 

 Hawk-moths, and flower-colour, ii. 196. 



and Honeysuckle scent, ii. 207. 



and laterally directed flowers, ii. 225. 



Hawkweed, Hairy. Hee Hieracium villosum. 

 Hawthorn. See Craheijus Oxyacantha. 

 Hay-bacillus. See Bacillus subtilis. 

 Hazel. See Corylus. 



Hearts'-ease. See Viola tricolor. 



Heat, action of, i. 58. 



— and distribution of plants, i. 527. 



— and dried seeds, i. 555. 



— and growth, i. 512. 



— and growth, estimation, i. 557. 



— and opening of flowers, ii. 219. 



— distribution in germination, i. 560. 



— effect on growth, &c., ii. 503. 



— effect on protoplasm, i. 553. 



— evolution in respiration, i. 497. 



— latent, i. 492. 



— nature of, i. 58, 513. 



— protection from loss, i. 528. 



— sensible, i. 492. 



— source of, i. 518. 



— transformation by plant, i. 492. 

 Heath. See Erica. 



Heath, Irish. See Dabeocia polifolia. 



— vegetation, indigestibility, i. 432. 

 Hedera, colour and flies, ii. 197. 



— easy vegetative propagation, i. 251. 



— honey, ü. 173, 179. 



— leaf-mosaic, i. 423. 



— roots from leaf -stalks, i. 772. 



— scent, i. 200. 



Hedera Helix, climbing roots, i. 702, 705, 754. 



embryo and cotyledons, i. 600. 



erect stems as cuttings, i. 709. 



flower-opening constant, i. 559. 



grafting and dwarf trees, ii. 518. 



on Oak, i. 703. 



resistance to cold, ii. 489. 



scent, ii. 209. 



variety in asexual shoots, ii. 471. 



Hedera poetarum, and resistance to cold, ii. 



489. 

 Hedge-shrubs, mode of growth, i. 673. 

 Hedychium, ii. 736. 



— hybrids and starch-grains, &c., ii. 566. 

 Hedychium angustifolium, ovary and fruit, 



ii. 77. 

 Hedysarum Canadense, hooked fruit, ii. 871. 

 Heliamphora nutans, habitat, ascidia, &c., 



i. 124, 125. 

 Helianthemum, cleistogamy, ii. 393. 



— conducting-tissue for poUen-tubes, ii. 410. 



— duration of blossoms, ii. 214. 



— elevation of leaf-stalks, i. 419. 



— flowers follow the sun, ii. 123. 



— hairs on, i. 317, 323. 



— nectarless, ii. 167. 



— pollen-grains, ii. 99. 



— protection of poUen, ii. 127. 



— stigma, ii. 281. 



HeUanthemum alpestre, protection of pollen, 

 ii. 120. 



protogynous, ii. 310. 



Helianthemum grandiflorum, erect and pro- 

 cumbent twigs, i. 417. 



Helianthemum marifolium, fertilization, ii. 

 411. 



Helianthemum Tuberaria, Mediterranean, 

 i. 319. 



Helianthus, ovary, ii. 73, 78. 



Helianthus annuus, germination constant, 

 i. 558. 



movements of cotyledons, i. 532. 



Helianthus tuberosus, alleged effect of graft 

 on Helianthus annuus, ii. 572. 



Helichrysum, coloured bracts, ii. 187. 



— decurrent leaves, i. 336. 



— hairy covering in summer, i. 319. 



— hermaphrodite andpistillate flowers, i. 297. 

 Helichrysum annuum, germination, i. 611, 



613. 

 Helichrysum arenarium, &c. , coloured bracts, 

 Ü. 187. 



flower-opening constant, 1. 559. 



with gall of Eutyloma Aschersonii, ii. 



521. 

 Helichrysum virgineum, Mount Athos, ii. 187. 

 Helicodiceros, pollination, ii. 164. 

 Heliosperma quadritidum, seed-dispersal, ii. 



852. 

 Heliotropium, scent, ii. 200. 

 HeU-bind, name for Cuscuta, i. 175. 

 Hellebore, White. See Veratrum album. 



Helleborine. See Epipactis. 

 Helleborus, cross-fertilization, ii. 305. 



— hybrids in, ii. 584. 



— movements of stamens, ii. 250. 



— nectaries, ii. 179. 



— pollen deposition, ii. 278. 

 Helleborus niger, colour of sepals, ii. 183. 

 habit, ii. 773. 



nectaries, change of colour in floral 



leaves, i. 376. 



odourless, i. 431. 



Helosis, leaf-scales, i. 191, 196. 

 Helotium Tuba, ii. 19. 

 Helvella, asci and ascospores, ii. 19. 

 Helvella fistulosa, &c., i. 589; ii. 19, 83, 



683. 

 Helwingia rusciflora, flowers on leaves, ii. 



38. 

 Hemerocallis, ii. 731. 



— cross-fertilization, ii. 301. 



— geographical distribution, ii. 402. 



— latitude and opening, ii. 217. 



— scentless, ii. 209. 



— stigma, ii. 281. 



Hemerocallis flava, duration of flowering, ii. 



213. 



roots, i. 760. 



Hemerocallis f ulva, latitude and closing, ii. 



218. 



opening and closing, ii. 212. 



sterility under cultivation, ii. 402. 



Hemibasidii, distinctive characters, ii. 676. 



Hemionitis, sori, ii. 706. 



Hemitelia, indusium, ii. 708. 



Hemlock. See Conium maculatum. 



Hemlock Firs, ii. 725. 



Hemp. See Cannabis sativa. 



Henbane. See Hi/oscyamus. 



Heubit Dead-nettle. See Lamium amplexi- 



caule. 

 Henslowia, parasitic, i. 204. 

 Hepatica triloba, antliocyanin, i. 520. 

 cause of flecked appearance of leaves, 



i. 285. 



dates of flowering, i. 519. 



duration of flowering, ii. 213. 



flower colour and habitat, ii. 194. 



winter protection, i. 550. 



Hepaticse, absorption cells of, i. 86. 



— absorption of carbonic acid, i. 62. 



— absorption of water, i. 218. 



— afford home to Podifer», i. 225. 



— and Nostoc, ii. 622. 



— apical-cell, i. 578. 



— cell-complexes, i. 591. 



— description, ii. 696. 



— forming rings, ii. 794. 



— in cascades, i. 79. 



— offshoots dispersed by rain, ii. 809. 



— on mouldered dust of dead trees, i. 109. 



— origin of sporophyte, ii. 654. 



— pressure exerted by rhizoids, i. 514. 



— saprophytic, on steep rocks, i. 108. 



— structure, i. 590. 



Heracleum, habitat and greenness, i. 384. 



— peripheral flowers, ii. 186. 



— water-receptacles, i. 240. 



Heracleum palmatum, organic remains in 



inflated vaginie, i. 242. 

 Heracleum Sphondylium, flowering shoot, ii. 

 789. 



scent, ii. 202. 



Herbaceous plants, effect of mutilation, ii. 



517. 



— shoot, i. 656. 



— stem, i. 715. 

 Herbse, i. 715. 

 Herbals, early, i. 4. 

 Herbarium, i. 5. 



Herbivora, power of discrimination, ii. 4S8. 

 Herb Paris. See Paris quadrifolia. 

 Herbs, perennial, foUage-leaves and rain, i. 



93. 

 Hercules-club, See Coryne pistillaris. 

 Hereditary modification, negative results of 



experiments, ii. 514. 

 Hermannia, propagation by root-slips, ii. 28. 



