INDEX. 



973 



Rotiferaa, resistance to cold, i. 542. 



— symbiosis with Liverworts, i. 225. 

 Rotting, and Fungi, i. 508. 

 Rousseau, lectures on botany, i. 6. 

 Koyal Fern. See Osmunda regalis. 

 Eubia, stipules, i. 637. 

 Rubiacese, il. 763. 



Rubus, indumenta of hybrids, ii. 564. 



— innumerable hybrids, ii. 585. 



— many forms of, ii. 900. 



— nectary, ii. 174. 



— prickles, i. 676. 



— weaving-stem, i. 672. 



Rubus bifrons, rooting branches, i. 769. 



Rubus Ohamsemorus, 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 f ulgens, colour-contrast in capitu- 

 lum, ii. 191. 



Rumex, anthocyanin, i. 484, 



— idichogamy, ii. 135. 



— geitonogamy, ii. 328. 



— venation, i. 630. 



Rumex Acetosella, radical buds, ii. 28. 

 Rumex alpinus, distribution of sexes, ii. 298. 



imperfect flower, ii. 295. 



pollen dispersion, ii. 143. 



protogyny, ii. 312. 



Rumex nemorosus and R. obtusifolius, 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, antholysis, ii. 83. 



pollen dispersion, ii. 143. 



Rumex tuberosus, roots, i. 760. 

 Runner, 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. 



RiKcus Hypoglossura, 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 Uredinece. 

 Rusb-fungua, teleutospores, ii, 24. 

 Ruta, capsule, ii. 431. 



— cross-fertilization, ii. 306. 



— pollen-grain, ii. 100. 



Ruta graveolens, flower, ii. 306. 



scent, ii. 202. 



seed and embryo, ii. 422. 



Rutacese, honey protection in, ii. 241. 



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



s. 



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

 Saccharomyces, development and ferment 



action, i. 506, 

 Saccharomyces cerevisiae, ii. 681. 



life-cycle, ii, 683. 



Saccharomyces ellipsoideus, fermentative 



activity, ii. 684. 

 Sacchanim officinarum, mechanical tissue 



arrangement, i, 731. 

 Sachs's table of Thallophyte classification, 



ii. 606. 

 Sagina Linnsei, nectaries, ii, 176. 



Sagina saxatilis, autogamy, ii. 338, 339, 

 Sagittaria, moncecious, ii. 297. 



— protective isolation by water, ii. 234. 

 Sagittaria sagittif olia, leaf and habitat, ii. 502. 

 Sainfoin. See Onohrychis. 



SalicineiiB, porogamic fertilization, ii. 413. 

 Saliva, action on granuloae and cellulose, i, 



460. 

 Salix, and galls of Nematusgallarum, 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. 



— pollen -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. pruincsa, 

 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. 



Sahx daphnoides, scent, ii, 202, 



Salix fragilis, inflorescences, ii, 299. 



water-absorption.from atmosphere, i.238. 



Salix grandifolia, and galls of Oecidomyia 

 rosaria, ii. 546. 



and galls of Hormomyia Capreae, ii. 538. 



effect of branch mutilation, ii. 516. 



Salix incaua, gall of Nematus pedunculi, ii. 

 531. 



Salix Myrsinites, plumed 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 Nematus vesicator, ii. 533. 



dichogamy and hybridization, ii: 314. 



experiment with partially stripped 



branch, i. 480. 



Salix repens,Btaminalchangeof colour, ii. 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. 

 Saltness of water, and blueness, i. 389. 

 Salvia, direction of flowers, ii. 225. 



— hairiness, i, 317. 



— hybrids, ii. 585. 



— pericarp mucilage, i. 615. 



Salvia argentea, 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 officinaUa, hammer-apparatus, ii, 263. 



Salvia pratensis, 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 bracts, ii. 188. 

 Salvinia, protection of sporangia, ii. 13, 



— sexual reproductive organs, ii. 69. 



— swimming habit, i. 669. 



Salvinia natans, submerged leaves, i. 766, 

 Salvinia ofQcinalia, stamen, ii. 87- 

 Salviniaceffi, 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. 



Sanguiaorba alpina, pollen discharge, ii. 145. 

 Sanicula Europsea, winter protection, i. 550. 

 Santalacese, ii. 754. 



— many parasitic, i. 176. 



Sap, ascent of, theoretical considerations, i, 

 270. 



— exudation in roaes, 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. 

 Sapotacese, ii. 768. 

 Saprolegnia, ii. 671. 



— offshoots, ii. 802. 



Saprolegnia ferax. parasitic on salmon, ii. 671. 



— parthenogenesis in, ii. 464. 



— selection of host, i. 171. 

 Saprolegniacese, 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, abaorption of organic com- 



poxmds, i. 103. 



— not sharply marked off from non-aapro- 



phytes, i. 104. 



— nutrition, i. 466. 



— relation to decaying bodies, i, 99. 



— substratum, ii. 499. 



Saprophytic Bacteria, effect on substratum, 



ii. 623. 

 Saprophytiam, means of determining, i, 100. 

 Sarcanthua roatratus, aerial roots, i. 753. 



strap-shaped adherent roots, i. 107. 



Sarcina ventriculi, ii. 624. 



Sarcophaga camaria and flower-colour, ii, 



197. 

 SarcophytacesB, 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 bacciferum, in Atlantic, ii. 665. 

 Sarothamnus, explosive flowers, ii. 267. 

 Sarotbamnus scoparius. See Spartium sco- 



parivm. 

 Sarracenia, heteromorphic leaves, i. 130. 



— storage of pollen, ii. 94. 



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

 pitchers and leaves, i. 130. 



