94-1 



INDEX. 



Digitalis, aud insect visits, ii. 222. 



— as instict shelter, ii. 163. 



— bees and poUeo, ii. 247. 



— corolla and autogamy, ii. 3(37. 



— effect of mutilation, ii. 517. 



— ODe-sided raceme, ii. 224. 



— ovary, ii. 76. 



— protaudrous, ii. 311. 



— protection of pollen, ii. 118. 



— spurred hybrids, ii. 576. 

 Digitalis grandiflora, attraction of foreign 



pollen-tubes by onUcs, ii. 414. 

 Digitalis lutescens, sheltering of pollen, ii. 



110. 

 Digitalis ochrolcuca, elevation and colorar 



tion, ii. 511. 

 Digitalis purpurea, duration of flowering, ii. 



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



temperature exi>eriments, i. 502. 



Dill. See Anethum gravtoUns. 

 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 protogyiious, ii. 313. 



pollination, ii. 136. 



Diooaja, 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. 

 DipIochlamydecB, of De Candolle, ii. 603. 

 Diplosis, escape of larvae from gaUs, 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, 

 Dipsacere. 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. 

 Discifloraj, ii. 777. 

 Discolichenea, 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, iL 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 climat«, 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 Ciiscuta. 

 Dodecatheou, autogamy, ii. 333. 



Dog's Mercury. See McrcuriaUs perennix. 

 Dog's-iooth Violet. See Erytkronium Vtns- 



Canis. 

 Dogwood. Seo Comus »anouinea. 

 Dolomite, attacked by Lichens, L 257. 



— prevalence of, i. 83. 

 Doria, pericarp mucilage, i. 615. 

 Dormant buds, ii. 30. 



— eye, nature of. ii. 30, 34. 

 Doronicum, artificially induced drooping, u. 



123- 



— protection of pollen, ü. 120. 

 Doronicum cordatum, dichogamy, ii. 312. 

 Doronicum glaciale, geitonogaray, 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. 

 Dorycuium decumbens, ash of, i. 69. 



isolated colonies, i. 528. 



Dorycnium herbaceum, seed-dispersal, ii. 833. 

 Dor>'phora, 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. -87. 



origin, ii. 86. 



Douglas Fir. See Tsuga DoiujtaHu. 

 Doum Palm. See Hyjikfrne tht baica. 

 Draba, hybridization, ii. 584. 



— indumenta of hybrids, ii. 564. 



— nectary, ii. 175. 

 Draba aizoides, autogamy, ii. 337. 



colour-contrast in inflorescence, iL 192. 



protection of pollen, ii. 121. 



Draba alpiua, absence of hairs, ii. 316. 



Draba borealis, autogamy, ii. 339. 



Draba Hoppeana, hybrid of D. Fladnizensis 



X D. Cariuthiaca, ii. 586. 

 Draba repens, unfruitful artificial autogamy, 



ii. 406. 

 Draba stellata, habitat and hairiness, L 315. 

 Draba Thomasii, hairs, i. 321. 

 Draba tomentosa, habitat and hairiness, i. 



315. 

 Draba verna, autogamy, ii. 339. 



col our-cont rast in inflorescence, ii. 192. 



Dracjena, mode of growth, i. 660. 



Dracaena Draco, geographical distribution, 



&c., Ü. 731. 

 of Orotava, age and dimensions, i. 714, 



720. 

 Dracocephalum, pericarp mucilage, L 615. 

 Dracocephalum Ruyschianum, elevation and 



coloration, ii. 511. 

 Dracontium, tubers, ii. 745, 

 Draciinculus creticus, and carrion-flies and 

 beetles, ii. 208. 



&c., insect visitors, ii. 165. 



Dragon-tree. See Dracctiia Draco. 

 Draparoaldia, differentiation of thallus, ii. 



620. 



— swarm-spores, i. 29, 30. 



— thallus, ii.652. 

 Drimys, pollen tetrads, ii. 97. 

 Dropwort. See Spiraa FUipendula. 

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



— arrangement of leaves, &c., L 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. iL 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. 

 iL 214. 



flower. iL 279- 



opening and closing, ii. 212. 



Btigma, ii. 279. 



weather and autogamy, iL 391. 



Drosera obovata. hybrid of D. longifolia X 



D. rotundifolia, ii. 586. 

 Drosera rotundifolia. carnivorous, habitat, 



i. 143. 

 Droseracerc. genera of, i. 148. 



— movements of stamens, iL 250 

 Drosophyllum, L 148. 



— description, L 154. 



— epiphyllous secretory glands, L 157. 



— ovary, ii. 75. 



— used as lime-twigs, i. 155. 

 Drosophyllum lusitanicum, i. 155; it. 237. 

 Drupaceous nut, nature of, ii. 429. 



of Fumaria, ii. 427. 



Drupe, nature of, ii. 428. 



Drjadea;, protection of pollen, iL 118. 



Dryandra. inflorescence, ii. 230. 



— pollination, ii. 230. 

 Dryandra floribunda, protection of storoata 



from moisture, L 296, 298. 

 Dryas, receptacle and carpels, ii. 76. 

 Dryas octopetala, i. 303. 3U4. 



autogamy in, ii. 381. 



distribution of seiea, iL 298 



procumbent habit, i. 062, 



Dryness, preventive of decay, i. 202. 



— seed protection against. iL 447. 

 Dryobalanops, seed-dispersal, ii. 854. 

 Dryoterus terminalis, budgulls on Oak, ii. 



543. 

 Dry-rot, i. 508. 



Dry-rot Fungus. See Merulius lacrymans. 

 Du Bois Raymond, compares dynamical 



with morphological description, L 17. 

 Duckweed. See Lemna. 

 Ducts, for collecting wat r, in foliage-leaves, 



L231. 

 Dudresnaya coccinea. antheridia, ic. ii 61. 



fertilization and fruit formation, iL 53. 



Dulcite. alluring, i. 461. 



Dung-beetles, and colour and odour of 



flowers, ii. 197. 

 Durmast. See Quercus sessilijiora. 

 Durvillrea, habit, ii. 664. 

 Durvillsea utilis. edible, ii. 665. 

 Dust, aerial, chemical substances in, i. 81. 



— circidation of, i- 81. 



— collection by Mosses and Lichens, &c., i. 

 266. 



— in snow and air, L 79. 



— meteoric, nature of, L 80. 



— organic, food of rotifers, iL 255. 

 Dutch Rush. See Equisdum kitmale. 

 Duvaua longifolia, and gall of Cecidoses 



Eremite, ii. 534, 537, 539. 

 Dwarf Elder. See Samhucvs Ebulus. 



— Leek. See Allium Chamcvmoly. 



— male, of CEdogonium, ii. 651. 



— Palm. See Ckamarops htimilis. 



E. 



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



Earth-stars. See Geaster. 



Earwigs, protection against, ii. 445. 



East Indian Archipelago. Heuslowia in, i. 204. 



Ebenaceae, iL 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, L 327. 



— and night visitors, ii. 196. 



— cross-fertilization, ii. 301. 



— spines, i. 446. 



Echinocactus horizontalis, iL 787. 

 Echinocactus oiygonus, 4c., size of flowers, 



Ü. 186. 



