944 



INDEX. 



Digitalis, and insect Tislts, il. 222. 



— as insect shelter, ii. 163. 



— bees and pollen, ii. 2i7. 



— corolla and autogamy, ii. 367. 



— effect of mutilation, ii. 517. 



— one-sided raceme, ii. 224. 



— ovary, ii. 76. 



— protandrous, ii. 311. 



— protection of pollen, ii. 118. 



— spurred hybrids, ii. 576. 



Digitalis grandiflora, attraction of foreign 

 pollen-tubes by ovules, ii. 414. 



DigitaUs 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 Anetkum graveolens. 



Dimorphic fruits, ii. 878. 



Dinifera, group of Dinoflagellata, ii. 625. 



Dinoflagellata, animal affinities, ii. 620. 



— description, ii. 625. 



Dioecious flowers, and wind-fertiUzation, ii. 

 134. 



— plant, type, ii. 299. 



— plants and hybridization, ii. 314, 



majority protogynous, ii. 313. 



pollination, ii. 136. 



Diooasa, advantage of carnivorous 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, 

 Diplochlamydeie, of De Candolle, ii. 603. 

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

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

 Diplosis tremulse, gall on Aspen petiole, ii. 



540. 

 Diplotaxis, 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. 

 Dipsacug, protective water basins, ii. 234. 

 Dipsacus laciniatus, water- receptacles, i. 



239, 242. 

 Diptera, gaU formation, ii. 527. 

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

 Disa, S. Africa, ii. 737. 

 Disciflorse, 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, 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-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. 

 Dodecatheon, autogamy, ii. 333. 



Dog's Mercury. See Mercurialis perennis. 

 Dog's-tooth Violet, See Erythronium Dens- 



Canis. 

 Dogwood. See Cornus 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 Pardaliancbes, opening of 



flowers and growth, ii. 220. 

 Doronicum soorpioides, 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 herbaceura, seed-dispersal, ii.833. 

 Doryphora, stamens, ii. 87, 89. 



— staminal stipules, ii. 89. 

 Double flowers, i. 646. 



abortive pollen, ii. 403. 



due to gall-mites, ii. 548. 



long fresh, ii. 287. 



origin, ii. 86. 



Douglas Fir. See Tsuga Douglasii. 

 Doum Palm. See Hypkoene thebaica. 

 Draba, hybridization, ii. 584. 



— indumenta of hybrids, ii. 564. 



— nectary, ii. 175. 



Draba aizoides, autogamy, ii. 337. 



coloiu--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, 1 315. 

 Draba Thomasii, hairs, i. 321. 

 Draba tomentosa, habitat and hairiness, i. 



315. 

 Draba verna, autogamy, ii. 339. 



colour-contrast in inflorescence, ii. 192. 



DraciKna, 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. 

 DracocephalumKuyschianum, 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 Dracosna Draco. 

 Draparnaldia, differentiation of thallus, ii. 



620, 



— swarm-spores, i. 29, 30. 



— thallus, ii. 652. 



Drimys, pollen tetrads, ii. 97. 

 Dropwort. See Spircea Filipendula. 

 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. 141 



— 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, 1. 145. 

 Drosera intermedia, antholysis, ii. 83, 



Drosera longifolia, duration of blossoming, 

 ii. 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. rotundif olia, 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 lusitanicimi, i. 155; ii. 237. 

 Drupaceous nut, nature of, ii. 429. 



of Fumaria, ii. 427. 



Drupe, nature of, ii. 428. 



DryadeEe, 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 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 MeruUus lacrymans. 

 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. 



fertihzation and fruit formation, ii. 53. 



Dulcite, alluring, i, 461. 



Dung-beetles, and colour and odour of 



flowers, ii. 197. 

 Durmast. See Quercms sessiliflora. 

 DurviUsea, habit, ii. 664. 

 Durvillsea utilis, edible, 11. 665. 

 Dust, atrial, 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. 

 Dntch Rush. See Egtiisetum hiemale. 

 Duvaua longifolia, and gall of Cecidoses 



Eremite, ii. 534, 537, 539. 

 Dwarf Elder. See Sambiicus Ehulus. 



— Leek, See Allium Chamcemolq/. 



— male, of (Edogonium, ii. 651, 



— Palm. See Ckamcerops humilis. 



E. 



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



Earth-stars. See Qeaster. 



Earwigs, protection against, ii. 445. 



East Indian Archipelago, Henslowia in, i. 204. 



EbenacesB, ii. 768. 



EcbaUium 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, i. 446. 



Echinocactus horizontalis, ii. 787- 

 Echinocactus oxygonus, &c., size of flowers, 



ii. 186. 



