INDEX. 



973 



RotiferEB, resistance to cold, i. 542. 



— symbiosis with Liverworts, i. 225. 

 Rotting, and Fungi, i. 508. 

 Rousseau, lectures on botany, i. 6. 

 Royal Fern. See Osmunda renalis. 

 Rubia, stipules, i. 637. 

 Rubiacese, ii. 763. 



Rubus, indumenta of hybrids, ii. 564. 



— iotmmerable hybrids, ii. 585. 



— many forms of, ii. 900. 



— nectary, ii. 174. ■ 



— prickles, i. 676. 



— weaving-stem, i. 672. 



Eubus bifrons, rootiug branches, i. 769- 



Rubus CbamEemoniB, water-receptacles, i. 

 239. 



Rubus fruticosus, protective function of air- 

 containing hairs, i. 314. 



Rubus Idseus, aggregate fruit, ii. 436. 



autogamy, ii. 390. 



flower, ii. 78. 



phyllotaxis, i. 400. 



radical shoots, ii. 27. 



recurrent opening, ii. 213. 



two-coloured leaves and habitat, i. 293. 



Rubus squarrosus, branches, i. 677- 



Rudbeckia fulgens, colour-contrast in capitn- 

 lum, ii. 191. 



Rumex, anthocyanin, i. 4S4. 



— 'dichogamy, ii. 135. 



— geitonogamy, ii. 328. 



— venation, i. 630. 



Rumex Acetosella, radical buds, ii. 23. 

 Rumex alpinus, distribution of sexes, ii. 298. 



imperfect flower, ii. 295. 



pollen dispersion, ii. 143. 



protogyny, ii. 312. 



Rumex nemorosus and R. obtusif olius, dicho- 

 gamy and hybridization, ii. 315. 



distribution of sexes, ii. 298. 



imperfect flowers, ii. 295, 



Rumex nepalensis, hooked fruit, ii. 873, 

 Rumex Patientia, probable hybrid, ii. 592. 

 Rumex scutatus, autholysis, ii. 83. 



pollen dispersion, ii. 143. 



Rumex tuberosus, roots, i. 760. 

 Rimner, adventitious roots, i. 751. 



— dimensions of, ii. 797. 



— nature of, i. 663. 



— production of offshoots by, ii. 802. 

 Ruppia, root origin, i. 766. 

 Ruscus, buds on cladodes, ii. 37. 

 Ruscus aculeatus, cladodes, i. 332. 

 shoot, i. 333. 



spinosity, i. 434. 



Ruscus Hypoglossum, cladodes, i. 333. 

 Rushes, in Alps, anthocyanin, i. 522. 

 Russelia, scarlet flowers, ii. 196. 

 Russia, Southern, lowlands of, hairiness of 



plants, i. 318. 

 Russula, laticiferous, i. 491 ; ii. 689. 

 Rust. See Undineip. 

 Rust-fungus, teleutosporea, ii. 24, 

 Ruta, capsule, ii. 431, 



— cross-fertilizatiun. ii. 306. 



— pollen-grain, ii. 100. 



Ruta graveolens, flower, ii. 306. 



scent, ii. 202. 



seed and embrj'o, ii. 422. 



Eutaceae, honey protection in, ii. 241. 



— of steppes, waxy bloom of leaves, i. 312. 



S. 



Saas-F^e. and TJromyces Pisi, ii. 525. 

 Saccharomyces, development and ferment 



action, i. 506. 

 Saccharomyces cerevisiffl, ii. 681. 



life-cycle, ii. 683. 



Saccharomyces ellipsoideus, fermentative 



activity, ii. 684, 

 Sacchamm officinarum, mechanical tissue 



arrangement, i. 731. 

 Sachs's table of Thallophj-te classiflcation, 



u. 606. 

 Sagina Linnsei, nectaries, ii. 176. 



Sagina saxatilis, autogamy, ii. 338, 339. 

 Sagittaria, monoecious, ii. 297. 



— protective isolation by water, ii. 234. 

 Sagittaria sagittifolia, leaf and habitat, ii. 502. 

 Sainfoin. See Onobrychis. 



Salicine», porogamic fertilizatiou, ii. 413. 

 Saliva, action on granulose and cellulose, i. 



460. 

 Salix, and galls of Nematus gallarum, ii. 537. 



— colour of anthers, ii. 183. 



— dates of flowering of hybrids and their 



parents, ii. 574. 



— deciduous bud-scales, i. 626. 



— galls, ii. 531. 533. 546. 552. 



— habitat in relation to water-collecting 



habit, i. 240. 



— hybrids, ii. 583. 



— insect pollination, ii. 583. 



— mechanical tissue arrangement, i. 729. 



— phyllotaxis. i. 399. 



— pollarding, ii. 37. 



— poUen-grains, ii. 99. 



— porogamic fertilization, ii. 413. 



— protogyny, ii. 313. 



— roots, i. 752. 



— ternary hybrids, ii. 560. 



— water-pore of nectary, ii. 172. 



Salix alba, and bud-galls produced by mites, 

 ii. 547. 



Salix amygdalina, S. purpurea, S. pruinosa, 

 protective layer of wax on leaves, i. 291. 



Salix aurita, normal and sucker leaves, ii. 516. 



Salix caprea, foliaceous ovule, ii. 83. 



hairs, ii. 565. 



phyllotaxis, i. 408, 



scent, ii. 202. 



Salix daphnoides, scent, ii. 202. 



Salix fragilis, inflorescences, ii. 299. 



water-absorption, from atmosphere, i. 238. 



Salix grandifolia, and galls of Ctcidomyia 

 rosaria, ii. 546. 



and galls of Hormomyia Caprece, ii. 538. 



effect of branch mutilation, ii. 516. 



Salix incana, gall of Nematus peduncuU, ii. 

 531. 



Salix Myrsinites, plimaed seeds, ii 857. 



Salix polaris, seeds escaping, ii. 424. 



Salix pruinosa, wax-like bloom, i. 462; ii. 237. 



Salix purpurea, and galls of Cecidomyia 

 rosaria, ii. 547. 



and galls of Nematua vesicator, ii. 533. 



dichogamy and hybridization, ii. 314. 



experiment with partiaUy stripped 



branch, i. 480. 



Salixrepens.staminalchangeof colour, iL 191. 



Salix reticulata, leaf, section, i. 301. 



Salix rubra, hybrid, hairs of, ii. 565. 



Salix viminalis, dichogamy and hybridiza- 

 tion, ii. 314. 



hairs, ii. 565. 



Salsify. See Tragopogon. 



Salsola, dichogamy, ii. 135. 



Salt, incrustations, of leaves and stems, mode 

 of retention, i. 237. 



— in sap of succulents, i. 329. 

 Saltuess of water, and blueness, i. 389. 

 Salvia, direction of flowers, ii, 225. 



— hairiness, i. 317. 



— hybrids, iL 585. 



— pericarp mucilage, i. 615. 



Salvia argeutea, absorption-cells of hairs, i. 

 227. 



Salvia betonicifolia, hybrid, ii. 585. 



Salvia cardinalis, red flower, ii, 196. 



Salvia cleistogama, flowers, ii. 394. 



Salvia glutinosa, flower and pollen trans- 

 ference, ii. 262. 



pollen -grains, ii. 98. 



rocking connective, ii. 262. 



sticky calyx, ii. 870. 



Salvia oflBcinalis, hammer-apparatus, ii. 263. 



Salvia prateusis, hammer-apparatus, ii. 263. 



Salvia splendens, coloured bracts, ii. 183. 



Salvia sylvestris, hybrid, peculiarity of foli- 

 age, ii. 576. 



Salvia Verbenaca, the Wild Clary, petiole 

 section, i. 22. 



Salvia verticillata, seed-dispersal, ii. 841. 

 Salvia viridis, alluring bi-acts, ii. 188. 

 Salvinia, protection of sporangia, ii. 13, 



— sexual reproductive organs, ii. 69. 



— swimming habit, i. 669. 



Salvinia natans, submerged leaves, i. 766. 

 Salvinia ofBcinalis, stamen, ii. 87. 

 Salviniacese, description, ii. 710. 

 Samara, nature of, ii. 430. 

 Sambucus Ebulus, scent, ii. 201. 

 Sambucus nigra, dates of flowering, i. 519, 



— — drupe, ii. 428. 



evergreen at Poti, i, 358. 



reserve-buds, ii. 32. 



scent, ii. 202. 



Sambucus racemosa, anthocyanin, i. 484. 



geitonogamy, ii. 326. 



scent, ii. 200. 



Sand, and preservation of fossil plants, ii. 612. 

 Sanguinaria Canadensis, latex, i. 470. 



stamen, ii. 87. 



Sauguisorba alpina, pollen discharge, ii. 145. 

 Sanicula Europiea, winter protection, i. 550. 

 Santalaceae, ii. 754. 



— many parasitic, i. 176. 



Sap, ascent of, theoretical considerations, i. 

 270. 



— exudation in roses, maples, birches, rela- 



tive volume, i. 272. 



— raw. or crude, factors determining desti- 



nation, i. 274. 

 Saponaria ocymoides, distribution of sexes, 

 ii. 300. 



elevation and coloration, ii. 511. 



Saponaria Vaccaria, duration of flowering, 



ii. 213. 

 Saponaria viscosa, carnivorous in minor 



degree, i. 156. 

 Saponin, in roots of Saponaria, i. 763, 

 Sapotaceae, ii. 768. 

 Saprolegnia, ii. 671. 



— offshoots, ii. 802. 



Saprolegnia ferax, parasitic on salmon, ii. 671. 



— parthenogenesis in, ii. 464. 



— selection of host, i. 171. 

 Saprolegniaceie, asexual and sexual repro- 

 duction, ii. 480. 



— characters, ii. 670. 



— on floating dead bodies, i. 105. 

 Saprophytes, absorption of carbon dioxide, 



i. 63. 



— absorption roots, i. 115. 



— fastidiousness of. i. 118. 



— favourable conditions for, i. 102. 



— fossil remains, ii. 614. 



— green, absorption of carbon, i. 103. 



— in humus of meadows, i. 112. 



— in water, i. 104. 



— non-green, absorption of organic com- 



pounds, i. 103. 



— not sharply marked off from non-sapro- 



phytes, i. 104. 



— nutrition, i. 466. 



— relation to decaying bodies, i. 99. 



— substratum, ii. 499. 



Saprophytic Bacteria, effect on substratum, 



u. 623. 

 Saprophytism. means of determining, i. 100. 

 Sarcaothus rostratus, aerial roots, i. 753. 



strap-shaped adherent roots, i. 107- 



Sarcina ventriculi, ii. 624. 



Sarcophaga caruaria and flower-colour, ii. 



197. 

 Sarcophytaceae, ii. 762, 

 Sarcophyte sanguinea. Cape, i. 195. 



description, i. 196. 



flowering axis, flowers, &c., i. 198. 



Sargasso Sea, area, &c.. ii. 665. 

 Sargassum, host for other Algae, i. 160. 

 Sargassum baceiferum, in Atlantic, ii. 665. 

 Sarothamnus, explosive flowers, ii. 267. 

 Sarothamnus scoparius. See Spartium sco- 



pariuvi. 

 Sarracenia. heteromorphic leaves, i. 130. 



— storage of pollen, ii. 94, 



Sarracenia Drummondii, honey, &c., i. 130. 

 pitchers and leaves, i. 130. 



