956 



Impatiens parviflora, inequality of leaves, 

 and use, i. 422. 



leaf-mosaic, i. 411. 



Impatiens tricomis, cross-f ertilization, ii. 306. 



protection of honey, li. 232. 



stem, i. 656. 



Imperfect flowers, 11. 294. 



Imprisonment of insects by flowers, ii. 164. 



Incrustment, type of community, ii. 889, 



894. 

 Indehiscent dry fruit, ii. 429. 

 Indian Banyans, i. 753. 



— Ocean, reddened by Trichodesmium, i. 389. 

 Indian Shot. See Carina. 

 India-rubber, latex of Ficus, i. 470. 

 India-rubber Fig. See Ficus elastica. 

 Indigofera, explosive flowers, ii. 267. 



— freezing, i. 546. 



— leaf, diurnal positions, i. 534. 

 Individual, meaning in Botany, ii. 5. 



— development, and phyllogeny, ii. 608. 

 Indol, nature of, ii. 199. 



Indoloid scent, ii. 199, 207. 



Indumenta, of hybrids, characteristics, ii. 



564. 

 Indumentum, or investment, ii. 564. 

 Indusium, nature of, ii. 13. 



— of Fern sorus, ii. 705. 



Infertility, of plants under cultivation, ii. 



402. 

 Inflorescence, application of term, i. 641. 



— detachment, i. 748. 



— nature of, i. 737. 



— sorts of, numerical relations, i. 745. 



— sympathetic movement of various parts, 



i. 744. 

 Inflorescences, and nocturnal radiation, i. 

 530. 



— of Balanophora, resemblance to Fungi, i. 



190. 



— periodic bending, i. 531 ; ii. 120. 

 Infusoria, derivation of term, i. 21. 



— prey of ITtricularia moutana, i. 123. 

 Inga, pollen-chambers, ii. 90. 

 Innovatio, i. 596. 



Innsbrxick, floral clock for, ii. 216. 

 Inorganic substances, absorption of, i. 60. 

 Insectivorous plants, and pepsin, i. 465. 



habitat in relation to supply of nitrogen, 



i. 158. 



with pitchers or ascidia, i. 123. 



Insect>galls, ii. 527 et seq. 

 Insect-visitors of Asclepiads, ii. 258. 

 Insect visits and duration of flowers, ii. 214. 

 Insects, absence of, and vegetative oSshoots, 

 ii. 459. 



— and anther-lids, ii. 129. 



— and colour sense, ii. 195. 



— and mixed pollination, ii. 403. 



— and plants, mutual interdependence, i. 



255. 



— and pollen-sprinkling flowers, ii. 271. 



— and pollination, i. 461; ii. 95. 



— and scents, ii. 207. 



— arrangements for reception, ii. 226, 227. 



— as hosts of parasitic Fungi, i. 168. 



— imprisonment by flowers, ii. 163, 164. 



— in Alps, ii. 400. 



— method of visiting flowers, i. 742. 



— olfactory organs, ii. 204. 



— parasitic, and stamens, ii. 87. 



— pollen-collecting and devouring, ii. 133. 



— probosces and honey, ii. 179. 



— smearing with pollen, ii. 245. 



— structural correlation to flowers, ii. 152. 

 Insolation and elevation, i. 525. 

 Instinct, examples of operation of, i. 53. 

 Institutiones Rei Herbarise, by Tournefort, 



ii. 601. 

 Integument, of Gymnosperm ovule, ii. 438. 



— of ovule, i. 644 ; ii. 72, 81, 84. 



— of seed, in Cuscuta, i. 173. 

 Intercellullar spaces, ice in, i. 540. 

 Interchange, of materials between root-hairs 



and substratum, i. S8. 

 Internode, hairs on, in Stellaria media, i. 227. 



— of stem, i. 396, 658. 



Internodes, twisting of, i. 417. 

 Intine. of pollen-grain, ii. 100. 

 Introrse, of anthers, ii. 95. 

 Intussusception, i. 44. 

 Inula, decurrent leaves, i. 336. 



— hairiness, i. 317. 



— hermaphrodite and pistillate flowers, ii. 



296. 



— hybridization, ii. 316. 



Inula viscosa, varnish-like coating, i. 312. 

 Invertin, enzyme of yeast, i. 465. 

 Investments, of plants, ii. 564. 

 Involucres, and nocturnal radiation, 1. 530. 

 Iodine, effect on plants, i. 73. 



— in plants, i. 66, 68, 71. 

 Ipecacuanha plant, ii. 764. 

 Ipomeea, pollen-grain, ii. 100. 

 Ipomaea muricata, prickles, &c., i. 687. 

 Ipomsea purpurea, autogamy, ii. 336. 

 opening of flower, i. 212. 



Iriartea, geographical distribution, ii. 740. 

 Iridacese, autogamy in, ii. 372. 



— characteristics, ii. 734. 



— heterostylism, ii. 398. 

 Iridese, equitant leaves, i. 336. 



— hybrids among, ii. 583. 

 Iridescence, of Phyllocladia, i. 388. 

 Iris, extrorse anthers, ii. 95. 



— germination, i. 604. 



— grafting experiments at Innsbruck, ii. 



571. 



— green cells, arrangement, i. 471. 



— humble-bees and pollen, ii. 247. 



— hybridization and flower colours, ii. 568. 



— nectary, ii. 176. 



— leaf twist, i. 429. 



— pollen deposition, ii. 280. 



— poUen-grains, ii. 99. 



— protection of pollen from wet, ii. 111. 



— stigma, i. 645 ; ii. 729. 



Iris arenaria, opening and closing, ii. 212. 

 Iris Florentina and I. Kochii, ii. 568, 572. 

 Iris Germanica and I. sambucina, colour of 



flowers and hybrid, ii. 568. 



flower, ii. 246. 



wax on leaves, i. 192. 



Iris Kochii, graft on I. Florentina, ii. 572. 



Iris odoratissima, scent, ii. 201. 



Iris pallida, wax on leaves, i. 292. 



Iris pumila, variability of floral colour, ii. 



569. 



wax on leaves, i. 292. 



Iris sibirica, sheltering of pollen from wet, 



ii. 109. 

 Iron, i. 73, 83, 258, 261. 



— in chlorophyll, i. 371. 



— oxide of, in dust, i. 81. 



— relation to chlorophyll, i. 67. 



— salts, i. 274. 



— storing by Bacteria, ii. 624. 



Iron hydroxide.accumulation through plants, 



i. 261. 

 Iron-ore, accumulation through plants, i. 



261. 

 Irrigation of rain-water, i. 97. 

 Ismene, scent, ii. 201. 

 Isoetaceie, descriptive details, ii. 716. 

 Isoetes, cambium-like zone, ii. 717. 

 Isoetes lacustris, whole plant, &c., ii. 716. 

 Isogametes, of Chlorochytrium, ii. 637. 



— of Gonium, ii. 631. 

 Isoloma, hybrids, ii. 575. 

 Isoplanogametes, of Chlorophyceae, ii. 628. 



— typical conjugation in Stephanosphaera, 



ii. 632. 

 Isopyrum, movements of stamens, ii. 250. 



— nectaries, ii. 179. 



Isopyrum thalictroides,leafandillumination, 

 i. 286. 



protection of pollen, ii. 120. 



Istria, Calluna vulgaris on coast, i. 526. 

 Istria, flora of, i. 306. 



— interior, absence of heaths, i. 307. 



— Spartium scoparium in, ii. 330. 

 Italian flora, general grayness of, ii. 317. 

 Ivy. See Hedera. 



Ivy-leaved Duckweed. See Lemna trisulca. 



Jack-fruit. See Artocarpus integrifolia. 

 Jacquin, grafting experiment with Ginkgo, 



ii. 572. 

 Japanese and artiflcial crossing, ii. 555. 



— Maidenhair Tree. See Ginkgo biloba. 



— Paper Mulberry. See Broussonetia papy- 



ri/era. 



— Saxifrage. See Saxifraya samientosa. 

 Jasminacea), ii. 771. 



Jasminum, freezing, i. 546. 



Jasminum nudiflorum, weaving stem, i 



672. 

 Jasminum officinale, scent, ii. 200. 

 Jatropha, stinging hairs, i. 441. 

 Jew's-ear Fungus. See Auricularia samhv^ 



cina. 

 Judas Tree. See Cercis Siliquastrum. 

 Juglans, bud-scales, i. 626. 



— cotyledons, i. 608. 



— fertUization porogamic, ii. 413. 



— fossU, i. 636. 



— mite-galls, ii. 529. 



— monoecious, ii. 297. 



— pollen-storing and dispersion, ii. 94, 148. 



— pollination, ii. 133. 



— protection of pollen, ii. 119. 



— protogynous, ii. 313. 



Juglans regia, anthocyanin in butls, i. 484. 



inflorescences, i. 742. 



pollination, i. 741. 



seed protection, ii. 446. 



stamen, ii. 87. 



unfolding leaves, i. 349. 



vernation, i. 350. 



Juliflorse, of Braun, ii. 605. 



"Jumping Bean", ii. 844. 



Juncaceaj, distinctive characters, ii. 730. 



— from chalk, ii. 613. 

 Jimcus, cleistogamy, ii. 392. 



— germination, i. 604. 



— hybrids in, ii. 583. 



— pollination, ii. 133. 



— protogynous, ii. 312. 



— switch-plants, i. 330. 



— venation, i. 634. 



Juncus alpinus, &c., and galls of Livia Jun- 

 corum, ii. 547. 



bulbils, ii. 454. 



Juncus bufonius, cleistogamy, ii. 394. 



Juncus castaoeus, anthocyanin, i. 522. 



Juncus diffusus, hybrid of J. effusus x J. 

 glaucus, ii. 586. 



Juncus glaucus, mechanical tissue arrange- 

 ment, i. 731. 



Juncus Jacquinii, anthocyanin, i. 522. 



pollen tetrads, ii. 97. 



Juncus lamprocarpus, habit and habitat, ii. 

 502. 



Juncus monanthos, &c., favourite soil, ii. 496. 



Juncus supinus, bulbils, ii. 454. 



habit and habitat, ii. 502. 



Juncus tritidus, anthocyanin, i. 522. 



habitat, i. 113. 



Jungerniannia, various species, shoots of, 

 i. 591. 



Jungermannia polyanthos, structure, i. 590. 



Jungermanniaceas, description, ii. 698. 



Junghuhn, discovers several Bilanophores 

 in Java, views concerning, i. 190. 



Juniper-Mistletoe. See VUcum Oxycedri. 



Juniperus, ii. 725. 



— and Gymnosporangium, ii. 686. 



— dioecious, ii. 299. 



— egg-cells, ii. 419. 



— embryo development, ii. 438. 



— fertihzation, ii. 420. 



— fleshy cone, ii. 440. 



— mutilation by ruminants, ii. 515. 



— pollen-sacs, ii. 89. 



— pollen storing and dispersion, ii. 146. 



— protection of ovules, ii. 72. 



— protection of poUen, ii. 117. 



— specific value of leaf anatomy, ii. 565. 



