Dasycladeee, characteristics, ii. 647. 

 Dasylirion, habitat, i. 438. 



— leaf, teeth and apex, i. 438. 

 Dasytes, honey-sucker, ii. 179. 



— pollen devourer, ii. 167. 



Date Palm. See Phoenix dactyli/era. 

 Date-plum. See Diospyros Lotus. 

 Datura, opening and closing, ii. 116. 



— scent, i. 202. 



Datura ceratocaula, size of flowers, ii. 185. 

 Datura Knightii, size of flowers, ii. 186. 

 Datura Metel, time open, ii. 213. 

 Datura Stramonium, fruit protection, ii. 442. 



inequality of leaves aud use, i. 422. 



leaf-mosaic, i. 411. 



night visitors, ii. 196. 



odour, i. 431. 



opening of flower, ii. 212. 213. 



protection of pollen, ii. 113. 



Daucus, peripheral flowers, ii. 186. 



— umbel, day and night positions, i. 531. 

 Daucus Carota, downward pull of roots, i. 767. 

 protection of stomata from moisture, 



i. 295. 



root, i. 760. 



Daughter-cells, i. 578. 



Davallia, protection of sporangia, ii. 13. 



— sorus and indusium, ii. 706. 

 Day-lily. See Hemerocallis flava. 



Deadly Nightshade. See Atropa Belladonna. 

 Dead Sea, blueness, i. 389. 

 De CandoUe, i. 15. 



table of classification, ii. 603. 



Decay, putrefactive, a necessary condition 



of life, i. 264. 

 Deciduous Cypress. See Taxodium dis- 



tichum. 

 Deciduous leaves, i. 347. 

 change of colour, i. 485. 



— shrubs, anthocyauin, i. 520. 



— stipules, i. 351. 

 Decurrent, leaf, i. 596. 



— leaves, transpiration, i. 336. 

 Decussate leaves, i. 398. 



Definitive nucleus, and endosperm forma- 

 tion, ii. 421. 



Defoliation, i. 361. 



Dehiscence of anthers in Grasses, ii. 91, 140. 



Dehiscent dry fruit, ii. 429. 



Deilaphila Euphorbise, victim of Araujia, ii. 

 260. 



De Jussieu, A. L. and B., natural system of 

 classification, ii. 602. 



De I'Ecluse, Charles (1526-1609). See Clusiue. 



Delphinium, foliage and light, i. 412. 



— follicle, ii. 430. 



— integument of ovule, ii. 81. 



— morphological value of ovule, ii. 82. 



— possible cause of doubling, ii. 554. 



— preservation of colour in Egyptian graves, 



i. 262. 

 Delphinium Ajacis, effect of mutilation, ii. 



517. 

 Delphinium cashmirianum, antholysis, ii. 



78. 

 Delphinium elatum, antholysis, ii. 83. 



re-erection of inflorescence, i. 744. 



Delphinium nudioauleandD. cashmirianum, 



colour of flowers and hybrid, ii. 507. 

 Delpino, and difference of poUen in hetero- 



styled flowers, ii. 405. 

 Dendrobium, ii. 738. 



— fimbriatum, discharge of pollinia, ii. 269, 



270. 

 Denizen, application of term, i. 243. 

 Dentaria, peripheral flowers, ii. 186. 



— scaly stem, i. 652. 



— wa.xy coating, ii. 237. 



Dentaria bulbifera, bulbils. U. 460, 461. 



habitat, ii. 110. 



rhizome and light, i. 484. 



Dentaria digitata, &c., leaf and light, i. 286. 



habitat, ii. 110. 



Dentaria enneaphyllos, habitat, ii. 110. 

 Dentate, i. 233. 



De Plantis Libri, by Cesalpino, ii. 601. 

 Deposition of pollen, ii. 280. 



INDEX. 



Derbesia, zoosporangia and zoospores, il. 



645. 

 Derivatives, of hydro-carbons, i. 454. 

 Dermatogen, and leaf origin, i. 649. 

 Derniestes, and Dracuuculua vulgaris, ii 



165. 



— and indoloid scents, ii. 207. 

 Dermestes undulatus, and Dracunculus 



Creticus, ii. 165. 



Dermogloea, ii. 621. 



De Saussure, discovers red-snow, i. 38. 



Deserts, annual and perennial plants in, i. 

 550. 



Desiccation, protection from, by salt incrusta- 

 tions, i. 236. 



— protection of fruits from, ii. 449. 

 Desmanthus natans, swimming apparatus, 



Desmid, division, ii. 655. 

 Desmids and specific constitution of proto- 

 plasm, ii. 492. 



— cell-division, i. 139, 576, 581. 



— conjugation, ii. 55. 



— habitat, i. 76 ; ii. 655. 



— nutritive cycle, i. 139, 466. 



— sculpturing of wall, i. 577. 



— striae of cell-walls, i. 568. 



— swarms of, i. 585. 



— various species, i. 492. 



— zygospores, ii. 492. 



Desmodium penduliflorum, leaf, diurnal posi- 

 tions, i. 534. 

 Desmoncus, spathe, i. 641. 

 Desmoncus polyanthus, shoot apex, i. 676. 

 Deterrent substances, i. 461. 

 Development, highest, views concerning, ii. 



— of individual, and phyllogeny, ii. 608. 

 Dew, accumulation on under surface of 



leaves, i. 291. 



— and diurnal positions of leaves, i. 535. 



— carbonic aud nitric acid in, i. 370. 



— on steppes and deserts, i. 235. 

 Dew-cup. ^ee Alcliemilla. 

 Dew-leaf. See Drosophyllum. 

 Dextrin, from starch, i. 465. 



— from sugar, i. 506. 



— osmotic behaviour of, i. 59. 



— percentage composition, i. 454. 

 Diacalpe, protection of sporangia, ii. 13. 

 Diadromous venation, i. 633. 

 Dialypetala, of Endlicher, ii. 604. 

 Diandrfe, androecium, ii. 736. 

 Diandria, Linnean class, ii. 86. 

 Dianthoecia albimacula, pollinating Silene 



nutans, ii. 155. 

 Dianthus, aestivation, ii. 210. 



— and ancient crossing, ii. 555. 



— and Campanula, colour-contrast, ii. 193. 



— double-flowered hybrids, ii. 576. 



— double flowers, ii. 80. 



— favoured guests, ii. 230. 



— honey protection, ii. 238. 



— hybridization and flower colours, ii. 568. 



— hybrids, ii. 584. 



autogamous propagation, ii. 579. 



— massing of flowers, ii. 186. 



— nectaries, ii. 176. 



— of Mediterranean, waxy bloom of leaves, 



i. 312. 



— poUen-grains, ii. 99, 102. 



— propagation by cuttings, i. 251. 



— substratum, ii. 49S. 



— transition from stamens to petals, ii. 86. 

 Dianthus alpiuus and D. superbus, hybrid 



of, ii. 563. 



cultural experiments, ii. 513. 



Dianthus Carthusianorum, pollen-grains, ii. 



98. 



thermal constants, i. 559. 



Dianthus Caryophyllus, mechanical tissue 



arrangement, i. 730. 



possible cause of doubling, ii. 554. 



scent, ii. 200. 



Dianthus deltoides, cultural eipcrimentg, 



soiurces of error, ii. 513. 

 Dianthus glacialis, aistivatiou, ii. 210. 



Dianthui uUicialli, autoooiT, U JJ7. 36i. 



diitribiitiou of lexa. H. a». 



DlaiithuB Inodonu (iylvoitrii), clevaUoo m4 



coloration, Ii. MI. 

 Dianthus ncKloctua, watiTatioo, il. 210. 



autogamy, II, 3«>4 



DianthuB (Knliwntjuiun, hybrid. IL 663 

 Dianthus pluumrius, poMlUe cause of dunb- 

 ling, ii, 554. 



scent, il. 200. 



DiauthuH prulifcr, (listribuiiuii ot UBiat, 

 ii.298. 



duration of flowering. II. 213. 



Dianthus superbus, scent, ii. 200, 

 Dianthus viscidus, source of spcdOc dbidc. 



ii, 235. 

 Diapensia Lapponlca, Arctic, absents of 



hairs, i. 316. 

 Diapensiacciu, II. 768, 

 Dia-stttse, action on sUrch. i, 459. 465. 



— distribution in plant, 1. 483. 

 Diastole. See Varuole. 



Diustrophus Scabiosa:, bud galls on Ceo 



taurea, ii. 543. 

 Diatom, description, i, 201 ; II, C25. 

 Diatom-deposits, ii. 627. 

 Diatom-earth, ii. 614. 

 Diatomacea;, as prey of Aldroranilla, I. 153, 



— ccll-racmbrane of, i, 40, 



— conjugation, il, 55. 



— epiphytic non-parasitic, i. 77. 160. 



— geographical distribution, il, 626. 



— movemenU of. I. 39 ; ii. (,yi. 



— preparation of siliceous skeletons, L 67 



— propagation, ic, ii, 026, 



— resistance to cold, i. 542. 



— silicic acid in, i. 67, 70. 



— social groups, i. 585. 



— some attached, some free, i. 40. 



— structure and light, i. 388. 



— swarms and filaments, I. 585, 586. 

 Diatomin, pigment of Diatoms, ii 625. 

 Diavolezza, Switzerland, soil and air tem 



peratures, I. 525. 

 Dichogamous Uowers, Ii. 307, 310. 

 Dichogamy and hybridizatiuu, ii. 314. 



— in Saiifraga rotundifolia, ii, 308, 



— nature of, ii. 134. 3li9. 

 Dicksonia, aerial roots, i. 753. 



— caudei, ii. 705, 714. 



— sorus and indusium. ii. 708. 

 Dicksonia antarctica, ac-rial roots, i. 714. 

 Dicliues irregulores, of de Jussieu, ii. 602. 

 Dicotyledoncs, ii. 728. 



— definition of, earlier sulKliTisions, I. ISi 



— distinctive characters, li 748. 



— of de Jussieu, Ii. 602. 



— sub-classes, ii. 748, 

 Dicotyledons, ii, 617. 



Dicranodontium aristatum, Ti-gilatKrc pro- 

 pagation, ii. 45S. 



Dicranodontium longirostre, habitat, I. 10?. 

 Dicranum, absorptive felt. L 86. 

 Dicmnum congestum, habitat, i. 109. 

 Dicranum elongatum. habitat, i. 113. 

 Dicranum Sauteri. exclusive habitat, i. 119. 

 Dicranum scoparium. habitat, i. 109. 

 Dictamnus, stamens as insect plaifom, tl. 



225. 

 Dictamnus fraxinella. scent, II. 203 

 Dictyilium ccmuum. sporangia, w. 491, 618. 

 Dictydium umbilicalum, llfc-bistorT, i. 673. 

 DictyoJronious, venation. L 630. 

 Dictyonema form, of Cora, Ii. 695. 

 Dictyophora phalloldca. ii, 691. 

 Dictyosphajrium. life<ycle, U. 636. 

 Didymlura. I, 573. 



DIdymodon ruber. iiarthenoccnr»j«. tl 461 

 Dicrvilla, twisting of iutcmodoa. I, 417 

 Dlcrrllla Canaavusls, erect and t«(id«al 



twigs. I. 417. 

 DIervilla rosea, otiiIoi and attraciiun of pot- 



len•tul>l•^ Ii. 414. 

 DifTusioD. thniugli mcrobrano aiid fr»e, L S8 

 Digestion, by Nopenthoa pitcher, I. 1S5, 



— in Aldrovaudia. I. 153 



— of prey, by DioDna. I ISO, 



