944 



INDEX. 



Digitalis, and insect visits, LL 222. 



— as insect shelter, ii. 163. 



— bees and pollen, ii 247. 



— coroUa and autogamy, ii. 367. 



— effect of mutilation, ii. 517. 



— outr-sided raceme, ii. 224. 



— ovary, ii. 76. 



— protandrous, ii. 311. 



— protection of poUen, ii. 118. 



— spurred hybrids, ii 576. 



Digitalis grandiflora, attraction of foreign 

 pollen-tubes by ovules, ii 414. 



Digitalis lutescens, sheltering of poUeo, ii 

 110. 



Digitalis ochroleuca, elevation and colora- 

 tion, ii. 511. 



Digitalis purpurea, duration of flowering, ii. 



flower-opening constant, i. 559. [213. 



— — temperature experiments, L 502. 

 Dill. See AJiethum gravtolens. 

 Dimorphic fruits, ii. S78. 



Dinifera, group of Dinoflagellata, ii 625. 

 Dinoflagellata, animal affinities, ii. 620. 



— description, ii. 625. 



Dioecious flowers, and wind-fertilization, ii 

 134. 



— plant, type, ii 299. 



— plants and hybridization, ii 314. 



majority protogynous, ii. 313. 



pollination, ii 136. 



Diona^a, advantage of c&rDlvoroua habit 

 questioned, i 157. 



— leaf compared to that of Drosera, i 151. 



— ovary, ii, 75. 



Diomea muscipula, i 148, 150, 340, 536. 

 Dioon. Central America, ii 720. 

 Dioscorea, mechanical tissue, i 732. 



— pollen-grains, ii. 99. 



— seed-dispersal, ii 852. 

 Dioscorides. i 4. 



Diospyros Lotus, imperfect flowers, ii 294. 

 Diphtheria, i. 163, 506; u. 624. 

 Diplochlamydeae, of De Candolle, ii 603. 

 Diplosis, escape of larvie from gaUs, ii. 53S. 

 Diplosis botularia. gall on Ash leaf, ii. 534. 

 Diplosis tremulse, gall on Aspen petiole, ii. 



MO. 

 Diplotasis, dehiscence of poUen-sacs, ii 93. 



— twisting of anther, ii. 250. 

 Dipsacese. ii. 352, 765. 



— distribution of sexes, ii. 298. 



— insects and pollen, ii. 244. 



— pollen deposition in, ii. 278. 



— water receptacles, i. 156. 

 Bipsacus. protective water basins, U. 234. 

 Dipsacus laciniatus, water- receptacles, i. 



239. 242. 

 Diptera. gall formation, ii 527. 

 Dipiero-cecidia, gnat^galls, ii. 523. 

 Disa. S. Africa, ii. 737. 

 Disciflone, ii. 777. 

 DiscoHchenes, characters, ii. 693. 



— subdivision, ii. 694. 

 Discomycetes, i 168; u. 19, 676, 68^ 683. 



— as lichen-fuDgi, ii. 693. 



— mode of attack, i. 163. 

 Discopodium, i 746. 

 Disc-shaped receptacle, i. 746. 

 Disease, due to bacteria, i. 163. 



Dishes, water-collecting, of plants, position, 



i 240. 

 Dispersal of offshoots, by animals, ii 827. 



general remarks, ii 832. 



Displacement, of leaf, by torsion, i 407. 



— of whorls, i 397. 

 Dissemination and gcrminatioD, L 614. 



— of respective partners of Lichenthallus, 



i246. 

 Distribution and climate, ii. 879. 



— conditions affecting, ii. 2. 



— of i-lants, and heat, i 527. 

 Divergence of leaves, i 3^7, 403. 

 Division, of cells, i. 576. 



— of labour, i 251. 367. 561, 694. 

 Doctrine of prolepsis. i. 8. 

 I>odder. See CtuctUa, 

 Dodtcatheou. autogamy, U. 333. 



Dog's Mercury. See Mercurialis perennis. 

 Dog's-tooth Violet. See Erythrotiium Dens- 



Canis. 

 Dogwood. See Comus aanguinea. 

 Dolomite, attacked by Lichens, i 257. 



— prevalence of, i 83. 



Doria, pericarp mucilage, i. 615. 

 Dormant buds, ii. 30. 



— eye. nature of. ii. 30, 34. 



Doronicum. artificially induced drooping, iL 

 123. 



— protection of pollen, ii. 120. 

 Doronicum cordatum, dichogamy, ii 312. 

 Doronicum glaciale, geitonogamy, ii. 322. 

 Doronicum Pardaliauches, opening of 



flowers and growth, ii. 220. 

 Doronicum scorpioides, geitonogamy, ii 



322. 

 Dorsal suture, of follicle, &c., ii 430. 

 Dors ten iaceae, ii 75S. 



— on trees and rocks, i 156. 108. 



— seed-dispersal, ii 835. 

 Dorycnium decumbens, ash of, i 69. 



isolated colonies, i. 528. 



Dorycnium herbaceuni. seed -dispersal, ii.833. 

 Doryphora, stamens, li 87. 89. 



— staminal stipules, ii. S9. 

 Double flowers, i. 646. 



■ abortive pollen, ii. 403. 



due to gall-mites, ii. 548. 



long fresh, ii -S'. 



origin, ii. 86. 



Douglas Fir. See Tsuga D&ugtasii. 

 Doum Palm. See Hi/pluene th':baiccu 

 Draba. hybridization, ii. 584. 



— indumenta of hybrids, ii 564. 



— nectary, ii 175. 



Draba aizoides, autogamy, ii 337. 



colour-contrast in inflorescence, ii 192. 



protection of pollen, ii 121. 



Draba alpina, absence of hairs, ii 316. 



Draba borealis, autogamy, ii. 339. 



Draba Hoppeana, hybrid of D. Fladnizensis 



X D. Carinthiaca, ii 586. 

 Draba repens, unfruitful artificial autogamy, 



ii. 406. 

 Draba stellata, habitat and hairiness, i 315. 

 Draba Thomasii, hairs, i 321. 

 Draba tomeotosa, habitat and bairiutss, i. 



315. 

 Draba vema, autogamy, ii 339. 



colour-contrast in inflorescence, ii 192. 



Draaena, mode of growth, i 660. 



Dracsena Draco, geographical distribution, 



&.C., ii. 731. 

 of Orotava, age and dimensions, i. 714, 



720. 

 Dracocephalum, pericarp mucilage, i 615. 

 Dracocephalum Ruyschianum, elevation and 



coloration, ii. 511. 

 Dracontium, tubers, ii. 745. 

 Dracunculus creticus, and carrion-flies and 

 beetles, ii. 208. 



&c., insect visitors, ii. 165. 



Dragon-tree. See Dracctjia Draco. 

 DraparnaldJa, differentiation of thaHus, ii. 



620. 



— swarm-spores, i. 29, 30. 



— thallus, ii. 652. 



Drimys, pollen tetrads, ii 97. 

 Dropwort. See Spircea Filipendula. 

 Drosera, PL U.. i 154. 158. 237. 536. 



— arrangement of leaves, &c., i. 144. 



— autogamy, ii. 356. 



— comparison o£ leaf with that of Dioniea, 



i. 15L 



— digestion of prey. i. 146. 



— duration of blossoming, ii. 214. 



— glantls, i 144. 



— great number 3f species, i 143. 14& 



— nectaries, ii 178. 



— ovary, ii. 75. 



— ovule, ii 82. 



— poUen-sacs. ii 89. 



— stigma, ii 282. 



— tentacles and their movements, i 145. 

 Drosera intermedia, antholysis, ii. 83. 



Drosera longifolia, duration of btossomine; 

 ii214. 



flower, ii 279. 



opening and closing, ii 212. 



stigma, ii. 279. 



weather and autogamy, ii 391. 



Drosera obovata, hybrid of D. longifolia x 



D. rotundifolia, ii 586. 

 Drosera rotundifoUa, carnivorous, habitat. 



il43. 

 Droserace%. genera of, i 148. 



— movements of stamens, ii. 250 

 DrosophyUum, i 143. 



— description, i. 154, 



— epiphyllous secretory glands, L 157. 



— ovary, ii. 75. 



— used as lime-twigs, i. 155. 

 DrosophyUum lusitanicum, i. 155; ii 237. 

 Drupaceous nut, nature of, U. 429. 



of Fumaria, ii 427- 



Drupe, nature of, 11. 428. 



Dryadese, protection of pollen, ii. US. 



Dryandra. inflorescence, ii- 230. 



— pollination, ii. 230. 



Dryandra floribunda, protection of stomata 



from moisture, i. 296, 298- 

 Dryas, receptacle and carpels, ii 76. 

 Dryas octopetala, i 303. 301. 



autogamy in, ii 381. 



distribution of seaes, ii 298 



procumbent habit, i 662. 



DrjTiess, preventive of decay, i 262. 



— seed protection against, ii. 447. 

 Drjobalanops, seed-dispersal, ii 854. 

 Dryoterus tenninalis, bud-galls on Oak, ii 



M3. 

 Dry-rot, i. 508. 



Dry-rot Fungus. See McruUuj lacrymans. 

 Du Bois Raymond, compares dynamical 



with morphological description, i 17. 

 Duckweed. Se&Lemna. 

 Ducts, for collecting water, in foliage-leaves, 



i23L 

 Dudresnaya coccinea, antheridia, &c., ii 61. 



fertilization and fruit formation, ii 53. 



Dulcite, alluring, i 461. 



Dung-beetles, and colour and odour of 



flowers, ii 197. 

 Durmast. See Qxurcus stssUifiora. 

 Durvillaea, habit, ii. 664. 

 Durvilliea utilis. edible, ii. 665. 

 Dust, aeriai chemical substances in, i 81. 



— circulation of, i 81. 



— collection by Mosses and Lichens, &c, i 



266. 



— in snow and air, i 79. 



— meteoric nature of, i. 80. 



— organic, food of rotifers, ii 255. 

 Dutch Rush. See Equisttum hiemale, 

 Duvaua longifolia, and gall of Cecidoses 



Eremite, ii. 534. 537. 539. 

 Dwarf Elder. See Sambucus EbiUus. 



— Leek. See Allium CTiamcrmoty. 



— male, of (Edogonlum. ii. 65L 



— Palm. See Chajjiarops humilis. 



E. 



Earth, properties and structure, i 82-84. 



Earth-stars. See Gewster. 



Earwigs, protection against, U. 445. 



East Indian Archipelago. Henslowia in, i 204. 



Ebenaceae, ii. 76S. 



Ecballium Elaterium, 8eed-di5!i>ersal. ii. 834. 



Ecbeveria, epiphyllous buds, ii 40. 



— leaf -rosettes, i. 410. 

 Echeverias. and cold, i 543. 



— Mexican, aqueous tissue, i. 328. 

 Echinocactus, i 327. 



— and night visitors, ii. 196. 



— cross- fertilization, ii. 301. 



— spines, i 446. 



Echinocactus borizontalis, ii 787- 

 Echinocactus oxygonus, &c., size of flowen^ 



ii. 186. 



