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. 



— ovai'y, ii. 76. 



— protandrous, ii. 311. 



— protection of pollen, ii. 118. 



— spurred hybrids, ii. 576. 



Digitalis grandiflora, attraction of foreign 

 pollen-tubes by ovvdes, ii. 414. 



Digitalis lutescens, sheltering of poUen, ii. 

 110. 



Digitalis ochroleuca, elevation and colora- 

 tion, ii. 5U. 



Digitalis purpurea, duration of flowering, ii. 

 213. 



flower-opening constant, i. 559. 



temperature experiments, i. 502. 



Dimorphic fruits, ii. 878. 



Dinifera, group of Dinoflagellata, ii. 625. 



Diuoflagellata, animal afiiuities, ii. 620. 



— description, ii. 625. 



Diceoious 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 carnivorous liabit 

 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. 



— poUen-grains, ii. 99. 



— seed-dispersal, ii. 852. 

 Dioscorides, i. 4. 



Diospyros Lotus, imperfect flowers, ii. 294. 

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

 Diplochlamydese, of De CandoUe, ii. 603. 

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

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

 Diplosis tremulai, gall on Aspen petiole, ii. 



540. 

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



— twisting of anther, ii. 250. 

 DipsaceuB, 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 laciuiatus, water- receptacles, i. 



239, 242. 

 Diptera, gall formation, ii. 527. 

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

 Disa, S. Africa, ii. 737. 

 Disciflorie, ii. 777. 

 Discolichenes, characters, ii. 693. 



— subdivision, ii. 694. 

 Disoomycetes, 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 Memirialis perennis. 

 Dog's-tooth Violet. See Erythronium Deiis- 



Canis. 

 Dogwood. See Cornus sant/uinea. 

 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 glaoiale, geitonogamy, ii. 322. 

 Doronicum Pardalianches, opening of 



flowers and growth, ii. 220. 

 Doronicum scorpioides, geitonogamy, ii. 



322. 

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

 Dorsteniaceae, ii. 758. 



— on trees and rocks, i. 156, 108. 



— seed-dispersal, ii. 835. 

 Doiycnium decurabens, ash of, i. 69. 



isolated colonies, i. 528. 



Dorycniura 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 Hyphwne thcbaica. 

 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 tomentosa, habitat and hairiness, i. 



315. 

 Draba verna, autogamy, ii. 339. 



colour-contrast in inflorescence, ii. 192. 



Dractena, mode of growth, i. 660. 



DracEena Draco, geographical distribution, 



&c., ii. 731. 

 of Orotava, age and dimensions, i. 714, 



720. 

 Dracocephalum, pericarp mucilage, i. 615. 

 Dracocephalum Ruyscbiaimm, elevation and 



coloration, ii. 511. 

 Dracontium, tubers, ii. 745. 

 Dracunoulus creticus, and carrion-flies and 

 beetles, ii. 208. 



&c., insect visitors, ii. 165. 



Dragon-tree. See Draccena Draco. 

 Draparnaldia, differentiation of thaUus, ii. 



620. 



— swarm-spores, i. 29, 30. 



— thallus, ii. 652. 



Drimys, pollen tetrads, ii. 97. 

 Dropwort. See Spinea Filipendula. 

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



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



— autogamy, ii. 356. 



— comparison of leaf with that of Dionfea, 



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, 

 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. rotundifolia, ii. 586. 

 Drosera rotundifolia, carnivorous, habitat, 



i. 143. 

 Droseraceae, 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 hme-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, Ü. 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. 



Di-y-rot Fungus. See Merulius lacrj/mcms. 

 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 Qiiercus sessiliflora. 

 Durvillrea, 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, i. 79. 



— meteoric, nature of, i. 80. 



— organic, food of rotifers, ii. 255. 

 Dutch Rush. See Eqvisetwn hiemale. 

 Duvaua longifolia, and gall of Cecidoses 



Eremite, ii. 534, 537, 539. 

 Dwarf Elder. See Sambucus Ebulus. 



— Leek. See Allium Chamcemoly. 



— male, of (Edogonium, ii. 651. 



— Palm. See Chammrops humilis. 



E. 



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



Earth-stars. See Geasttr. 



Earwigs, protection against, ii. 445. 



East Indian Archipelago, Henslowia in, i. 204. 



EbenaceiB, 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, i. 446. 



Echinocactus horizontalis, ii. 787. 

 Ecliinocactus oxygonus, &c., size of flowers, 



ii. 186. 



