944 



INDEX. 



Digitalis, and insect visits, it 223. 



— as insect shelter, ii. 163. 



— bees and pollen, ii. 247. 



— corolla and autogamy, ii. 367. 



— effect of mutilation, ii. 517. 



— one-sided raceme, ii. 224. 



— ovary, ii. 76. 



— protandrouB, ii. 311. 



— protection of pollen, ii. 118. 



— spurred hybrids, ii, 576. 



Digitalis grandiflora, attraction of foreign 

 pollen-tubes by ovules, ii. 414. 



Digitalis lutescens, sheltering of pollen, ii. 

 110. 



Digitalis ochroleuca, elevation and colora- 

 tion, 11. 511. 



Digitalis purpurea, duration of flowering, ii. 

 213. 



flower-opening constant, i. 559. 



temperature experiments, 1. 502. 



Dimorphic fruits, ii. 878. 



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. 



Dionsea, advantage of eamivorous habit 

 questioned, i. 157. 



— leaf compared to that of Drosera, i. 151. 



— ovary, ii. 75. 



Dionsea 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; ii. 624. 

 Diplochlamydese, of De Oandolle, ii. 603. 

 Diplosis, escape of larvae from galls, ii. 538. 

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

 Diplosis tremulse, gall on A^pen petiole, ii. 



540. 

 Diplotaxis, dehiscence of pollen-sacs, ii. 93. 



— twisting of anther, ii. 250. 

 Dipsaceae, ii. 352, 765. 



— distribution of sexes, ii. 298. 



— insects and pollen, ii. 244. 



— pollen deposition in, ii. 278. 



— water receptacles, i. 156. 

 Dipsacus, protective water basins, ii. 234, 

 Dipsacus laciniatus, water- receptacles, i. 



239, 242. 

 Diptera, gall formation, ii. 527. 

 Diptero-cecidia, gnat-gaUs, ii. 528. 

 Disa, S. Africa, ii. 737. 

 Disciflorae, ii. 777. 

 Discolichenes, characters, ii. 693, 



— subdivision, ii. 694. 

 Discomycetes, i. 168 ; ii. 19, 676, 682, 683. 



— as lichen-fungi, ii. 693. 



— mode of attack, i. 163. 

 Dlscopodjumj i. 746. 

 Diac-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 germination, i. 614. 



— of respective partners of Lichen-tballus, 



i. 246. 

 Distribution and climate, ii. 879. 



— conditions affecting, ii. 2. 



— of plants, and heat, i. 527. 

 Divergence of leaves, i. 397, 403. 

 Division, of cells, i. 576. 



— of labour, i. 251, 367, 561, 594. 

 Doctrine of prolepsis, i. 8. 

 Dodder. See Cuacuta. 

 Dodecatheou, autogamy, ii. 333. 



Dog's Mercury. See Mercurialis perennis. 

 Dog's-tooth Violet. See Erythronivm Dens- 



Canis. 

 Dogwood. See Comus sanguinea. 

 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, ii. 

 123. 



— protection of pollen, ii. 120. 

 Doronicum cordatum, dichogamy, ii. 312. 

 Doronicum glaciale, geitonogamy, ii. 322. 

 Doronicum Pardalianches, opening of 



flowers and growth, ii. 220. 

 Doronicum scorpioides, geitonogamy, ii. 



322. 

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

 Dorsteniaceae, ii. 758. 



— on trees and rocks, i. 156, 108. 



— seed-dispersal, ii. 835. 

 Dorycnium decumbens, ash of, i. 69. 



isolated colonies, i. 528. 



Dorycnium herbaceum, seed-dispersal, ii. 833. 

 Doryphora, stamens, ii. 87i 89. 



_ staminal stipules, ii. 89. 

 Double flowers, i. 646. 



abortive pollen, il. 403. 



due to gall-mites, ii. 548. 



long fresh, ii. 287. 



origin, ii. 86. 



Douglas Fir. See Tsuga Doiiglasii. 

 Doum Palm. See Syphcene thebaica. 

 Draha, hybridization, il. 584. 



— indumenta of hybrids, ii. 564. 



— nectary, ii. 175. 



Draba aizoides, autogamy, iL 337. 



colour-contrast in inflorescence, ii. 192. 



protection of pollen, ii. 121. 



Draba alpina, abseuce 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 Thomasli, hairs, i. 321. 

 Draba tomentosa, habitat and hairiness, i. 



315. 

 Draba vema, autogajny, ii. 339. 



colour-contrast in inflorescence, ii. 192. 



Dracaena, mode of growth, i. 660. 

 Dracsena Draco, geographical distribution, 



&c., ii. 731. 

 of Orotava, age and dimensions, i. 714, 



720. 

 Dracocephalum, pericarp mucilage, 1. 615. 

 Dracocephalum Buyschianum, elevation and 



coloration, ii. 511. 

 Dracontium, tubers, ii. 745. 

 Dracimculus eretlcus, and carrion-flies and 

 beetles, ii. 208. 



&e., insect visitors, ii. 165. 



Dragon-tree. See Draccena Draco. 

 Draparnaldla, differentiation of tballus, ii. 



620. 



— swarm-spores, i. 29, 30. 



— thallus, ii. 652. 



Drimys, pollen tetrads, ii. 97. 

 Dropwort. See Spircea Filipendvla. 

 Drosera, PI. II., i. 154, 158, 237, 536. 



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



— autogamy, ii. 356. 



— comparison of leaf with that of Dionsea, 



i. 151. 



— digestion of prey, i. 146. 



— duration of blossoming, ii. 214. 



— glands, i. 144. 



— great number of species, i. 143, 148. 



— nectaries, ii. 178. 



— ovary, ii. 75. 



— ovule, ii. 82. 



— pollen-sacs, ii. 89. 



— stigma, ii. 282. 



— tentacles and their movements, i. 145. 

 Drosera intermedia, antholysis, ii. 83. 



Drosera longifolia, duration of blossoming, 

 u. 214. 



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 rotundifolia, carnivorous, habitat, 



i. 143. 

 Droseracese, genera of, i. 148. 



— movements of stamens, ii. 250 

 Drosophyllum, i. 148. 



— description, i. 154. 



— epiphyllous secretory glands, i. 157. 



— ovary, ii. 75. 



— used as lime-twigs, i. 155. 

 Drosophyllum lusitanicum, i. 155; ii. 237. 

 Drupaceous nut, nature of, ii. 429. 



of Fumaria, ii. 427. 



Drupe, nature of, ii. 428. 



Dryadese, protection of pollen, it 118. 



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, 304. 



autogamy in, ii. 381. 



distribution of sexes, ii. 298 



procumbent habit, i. 662. 



Dryness, preventive of decay, i 262. 



— seed protection against, ii. 447. 

 Dryobalanops, seed-dispersal, ii. 854. 

 Dryoterus terminalis, bud-galls on Oak, ii. 



543. 

 Dry-rot, i. 508. 



Dry-rot Fungus. See Memlvm laorymans. 

 Du Bois Raymond, compares dynamical 



with morphological description, L 17. 

 Duckweed. See Lenrna. 

 Ducts, for collecting water, in foliage-leaves, 



L23L 

 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 Quercus sessiliflora. 

 DurvUlEea, habit, ii. 664. 

 Durvillasa utlhs, edible, ii. 665. 

 Dust, aerial, 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 Bush, See Eguisetum hiemale. 

 Duvaua longifolia, and gall of Cecidoses 



Eremite, ii. 634, 537, 539. 

 Dwarf Elder. See Samibiiffus Ebuhis. 



— Leek. See Allmm Chamamoly. 



— male, of CEdogonium, ii. 651. 



— Palm. See Ghamcerops humUis. 



E. 



Earth, properties and structure, i. 82-^. 



Earth-stars. See Oeaster. 



Earwigs, protection against, ii. 445. 



East Indian Archipelago, Heuslowia in, i. 204. 



Ebenacese, ii. 768. 



Ecballium Elaterium, seed-dispersal, ii, 834. 



Echeveria, 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, 1. 446. 



Echinocactus horizontalis, ii. 787. 

 Echinocaclus oxygonus, &o,, size of flowers, 



ii. 186. 



