944 



INDEX. 



Digitalis, and insect visits, ii. 222, 



— 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. 



— protandi-ou3, ii. 311. 



— protection of pollen, ii. 118. 



— spurred hybrids, ii. 576. 



Digitalis graudiflora, attraction of foreign 

 pollen-tubes by ovules, ii. 414. 



Digitalis lutescens, sheltering of pollen, ii. 

 110. 



Digitalis ochroleuca, elevation and colora- 

 tion, ii. 511. 



Digitalis purpurea, duration of flowering, ii. 



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



temperature experiments, i. 502. 



Dill. See Anethum graveoUns. 



Dimorphic fruits, ii. 878. 



Dinifera, group of Dinoflagellata, ii. 625. 



Dinoflagellata, animal affinities, ii. 620. 



— description, ii. 625. 



Dicecious flowers, and wind-fertilization, ii. 

 134. 



— plant, type, ii. 299. 



— plants and hybridization, ii. 314. 



majority protogynous, ii. 313, 



pollination, ii. 136. 



DionEea, advantage of carnivorous habit 

 questioned, i. 157. 



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



— ovary, ii. 75. 



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

 Dioon, Central America, ii. 720. 

 Dioscorea, mechanical tissue, i. 732. 



— pollen-grains, ii. 99. 



— aeed-dispersal, ii. 852. 

 Dioscorides, i. 4. 



Diospyros Lotus, imperfect flowers, ii. 294. 

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

 DiplochlamydesB, of De Candolle, ii. 603. 

 Diplosis, escape of larvK from gaUs, ii. 538. 

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

 Diplosis tremulfe, gall on Aspen petiole, ii. 



540. 

 Diplotuxis, dehiscence of pollen-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. 

 Dipsacus, protective water basins, ii. 234, 

 Dipsacus laciniatus, water- receptacles, i. 



239, 242. 

 Diptera, gall formation, ii. 527. 

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

 Disa, S. Africa, ii. 737. 

 DiBcifloraa, 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. 

 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, ti. 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-thallus, 



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 Cuscuta. 

 Dodecatheou, autogamy, ii. 333. 



Dog's Mercury. See Mercurialis perennis. 

 Dog's-tooth Violet. See Erythronium Dens- 



Canis. 

 Dogwood. See Cotuus satiguinea. 

 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. oi2. 

 Doronicum glaciale, geitonogamy, ii. 322. 

 Doronicum Pardalianches, opening of 



flowers and growth, ii. 220, 

 Doronicum scorpioides, geitonogamy, ii, 



322. 

 Dorsal sutiure, 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. 87, 89. 



— staminal stipules, ii. 89. 

 Double flowers, i. 646. 



abortive poUen, ii, 403. 



due to gall-mites, ii. 543, 



long fresh, ii. '2S1. 



origin, ii. 86. 



Douglas Fir. See Tsiiga DouglasU. 

 Doimi Palm. See Hyphcene thebaiccu 

 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, CarintMaca, ii, 586, 

 Draba repens, unfruitful artificial autogamy, 



ii. 406. 

 Draba atellata, habitat and hairiness, i. 315. 

 Draba Thomasii, hairs, i. 321. 

 Draba tomentosa, habitat and hairiness, i. 



315. 

 Draba vema, autogamy, ii. 339. 



colour-contrast in inflorescence, ii. 192. 



Dracycna, mode of growth, i. 660. 



Dracaena Draco, geographical distribution, 



&c., ii, 731. 

 of Orotava, age and dimensions, i. 714, 



720. 

 Dracocephalum, pericarp mucilage, i. 615. 

 Dracocephalum Ruy.schianum, 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 Draccena Draco. 

 Draparnaldia, differentiation of thalius, ii. 



620. 



— Bwarm-sporea, i. 29, 30. 



— thaUus, ii. 652. 



Drimys, pollen tetrads, ii. 97. 

 Dropwort. See Spircea Filipendula. 

 Drosera, i, 143, 154, 158, 237, 536, 



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



— autogamy, il. 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, iL 178, 



— ovary, ii, 75. 



— ovule, ii. 82. 



— pollen-sacs, ii. 89. 



— stigma, ii. 282. 



— tentacles and their movements, i. 145. 

 Drosera intermedia, antholysie, 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. 

 Droseracete, 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, ii. 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 seses, ii. 298 



procumbent habit, i, 662. 



Dryness, preventive of decay, i, 262. 



— seed protection against, ii. 447. 

 Dryobalanops, seed-dispersal, ii. 854. 

 Drj'oterus terminalis, bud-galls on Oak, ii. 



543. 

 Dry-rot, i. 508. 



Dry-rot Fungus, See MerullU'i lacryvians. 

 Du Bois Raymond, compares dynamical 



with morphological description, i, 17. 

 Duckweed. See Lemna. 

 Ducts, for collecting water, in foliage-leaves, 



i. 231. 

 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 Qiterc-us sessilifiora. 

 DurvilliEa, habit, ii. 664. 

 Durvillsea utilis, 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, 1. 79, 



— meteoric, nature of, i. 80, 



— organic, food of rotifers, ii. 255. 

 Dutch Rush, See Equisvtiim hiemale. 

 Duvaua longifolia, and gall of Cecidosea 



Eremite. U. 534, 537, 539. 

 Dwarf Elder. See Samhuciis Ebulus. 



— Leek. See Allium Chamxmoly. 



— male, of CEdogonium, ii. 651. 



— Palm. See Chamoirops humilis. 



E. 



Earth, properties and structure, i. 82-84. 



Earth-stars. See Qeaster. 



Earwigs, protection against, ii. 445. 



East Indian Archipelago. Heuslowia in, i. 204. 



Ebenacete, ii, 768, 



EcbaUium Elaterium, seed-dispersal, ii. 834. 



Echeveria, epiphyUous 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 horizontalia, ii. 787- 

 Echinocactufl oxygonus, &c., size of flowers, 



ii. 186. 



