INDEX. 



The page nuvibers in bolde?' type indicate illustrations. 



Abano, Sphserotllus in hot springs at, i. 654. 



Abele. See Populus alba. 



Abies, and Witches' Broom, ii. 626. 



— axillary buds. ii. 29. 



— fertilisation, ii. 420. 



— green cotyledons, ii. 622. 



— needles, ii. 725. 



— pollen storing and dispersion, ii. 145. 



— protection of OTUles, ii. 72. 



Abies escelsa and galls of Chermes abietia, 



ii. 544. 



cone characteristics, ii. 725. 



egg-ceils, ii. 419. 



embryo development, ii. 438. 



flower-opening constant, i. 559. 



Pine-apple Gall on twigs, ii. 534. 



stamen, ii, 87. 



various dimensions, i. 722. 



vertical range, i. 527. 



Abies orientalis, cotyledons, i. 621. » 



Abies pectinata, i. 717. 



and .-Ecidium elatinum, ii. 523, 527. 



annual rings and sinkers of Mistletoe, 



1. 210. 



bract scale, ii. 440, 441, 721. 



cone. ii. 441, 721, 725. 



embryo development, ii. 438. 



ovuliferous scaJes, ii. 441. 



Abietinea, arrangement of scales, ii. 440. 



— distinguishing feature, ii. 721. 



— embryo development, ii. 438. 

 Abronia, tinequal cotyledons, i. 622. 

 Absorbent cells, i. 765. 



of cotyledons, i. 599, 600. 



Absorption bands of chlorophyll spectrum, i. 



372. 

 Absorption-ceUs, i. 87, 217. 

 capitate or glandular, of multicellular 



hairs, mode of action, i. 229. 



controlling influences, i. 90. 



form of, i. 86. 



fungal h3T)hEe a substitute for, i. 249. 



in Leucobryum, &c., i. 86. 



in Nepenthes pitcher, i. 135. 



in special cavities and grooves in leaves, 



i. 230. 



of Bartsia, i. 180. 



of Cuscuta, of Cassythse, i. 176. 



of foliage-leaves, other than trichomes, 



restricted action, i. 230. 



of Latbrffia. i. 182. 



of leaves, conditions of action, i. 227. 



of Mildews, i. 166. 



of Orchid aerial roots, i. 223. 



of Plagiothecium, i. 85. 



of K-binantbaceifi, i. 178. 



of roots, permeability, &c., i. 226. 



of Saprophytes, i. 114. 



of Stellaria media, i. 228. 



of Thesium, i. 177- 



of Utricularia bladders, 1. 121. 



of water-receptacles, proof of acting as 



such, i. 240. 



on leaf -cuttings, ii. 42. 



on leaves of Tamarisks, Frankenias, &c., 



mode of development, i. 236. 



position of. i. 88. 



replaced by mycelium, i. 91. 



shape in relation to food-supply, &c., 



i. 90. 



Absorption of food-salts, i. 85. 



— of rain and dew, by foliage-leaves, i. 225. 



— of water by foliage-leaves, i. 232. 

 Absorption-roots, of Saprophytes, i. 115. 

 Absorptive cavities and cups on foliage- 

 leaves, i. 233. 



— organs, of some Plumbaginese, i. 234. 

 Abu-Arisch, Arabia, shade temperature, i. 



556. 

 Abutilon AvicennsB, autogamy, ii. 355. 



cross-fertilization, ii. 304. 



Acacia. See also Robinia Pseudacacia. 



— pollen-chambers, ii. 90. 



— popularly so called, i. 534. 



— reception of insects, ii. 230. 



— root-slips, ii. 28. 



— scent, ii. 201. 



— true, diurnal positions of leaves, i. 534. 



— unprotected pollen, ii. 107. 



Acacia cafEra, &c., hosts of Sarcophyte, i. 



196. 

 Acacia lophantha. Australia, leaf, diurnal 



positions, i. 534. 

 Acacia spadicigera, myrmecophilous, ii. 233. 

 Acacia sphterocephala, myrmecophilous, ii. 



233. 

 Acacias, Australian, coloured stamen fila- 

 ments in, ii. 183. 



distribution of stomata on phyUodes, i. 



281. 



leaf metamorphoses, i. 637. 



phyUodes, i. 335. 



wax on leaves, &g., i. 292. 312. 



Acalypha, stamen, ii. 87- 

 Acanthacese, ii. 771. 



— and cold, i. 545. 



— inflorescence, i. 746. 



— pollen-sprinkling apparatus in, ii. 271. 



— scarlet flowers in, ii. 196. 

 Acantholimon, absorptive organs, i. 234. 



— acicular leaves, i. 434, 437. 



— and spiny Tragacanth-shrubs, Persian 



steppes, i. 435. 



— calcareous incrustation, i. 237. 



— habitat, i. 235. 



Acantholimon Senganense, absorptive or- 

 gans, iScc, i. 235. 



leaf, and section of part, i. 233. 



lime incrustations, i. 235. 



Acanthophyllum, leaves, i. 434, 

 Acanthus, and insect visits, ii. 223. 



— coloui -contrast in flower, ii, 191. 



— cross-fertilization, ii. 304, 



— emerging of leaves from soil, i. 639. 



— honey protection, ii. 241. 



— pollen-sprinkling apparatus, ii. 273. 



— protection of pollen from wet, ii. 110. 

 Acanthus longifolius, flower, and pollen- 



sprinkhng apparatus, ii. 273. 

 Acanthus mollis, habit, ii. 772. 



mildew of, i. 166. 



seed-dispersal, ii. 833, 835. 



Acanthus spinosissimus, i. 437, 



Acanthus spinosus, pollen -sprinkling, ii. 273. 



Acanthus spinulosus, hybrid of A. mollis x A 



spinosissimus, ii. 586. 

 Acarina, i. 138. 



Acarospora glaucocarpa, habitat, i. 117. 

 Acarus, prey of Utricularia montana, i. 123. 

 Acaulescent Gentians, autogamy, ii. 387. 



925 



Acaulescent Violas, cleistogamy, ii. 393. 

 Accessory organs, of flowers, ii. 71. 



— substances, of plants, i. 460. 



Acer and Gleditschia triacanthos, struggle for 

 existence, ii. 515. 



— and Nectria, ii. 678. 



— arrangement of foliage-leaves, i. 92. 



— colour of flowers and flies, ii. 197. 



— from chalk, ii. 613. 



— green cotyledons, i. 622. 



— hybrids in, ii. 584. 



— mechanical tissue arrangement, i. 729. 



— roots, i. 752. 



— texture of so-called mite-galls, ii. 532. 



— vernation, i. 350. 



Acer campestre, mite-gaUs, ii. 529. 



Acer Monspessulanum, seed-dispersal, ii 



853. 

 Acer platanoides, distribution of sexes, U 



297. 



flower-opening constant, i. 559. 



leafy twig, i. 416. 



normal and sucker leaves, ii. 516. 



Beedhng, i. 9. 



twig and elongation of leaf-stalks, 1 



419. 



venation, i. 631. 



Acer Pseudo-platanus, distribution of sexes, 



ii. 297. 



imperfect flowers, ii. 295. 



Acer rubrum, i. 488. 



Aceras and Orchis, hybridization, ii. 583. 

 AcerosK, of Braun, ii. 605. 

 Acetabularia, colonies, i. 585. 



— marine lime accumulators, i, 261. 

 Acetabularia mediterranea, structure, &c. 



ii. 646. 

 Acetabulariie, differentiation of thallus, ii 



646. 

 Acetic acid, from alcohol, i. 506. 

 Achene, embryo protection, ii. 450. 



— nature of, ii. 429. 



— of GnaphaUum alpiniim, ii. 84. 

 Achenes. with pappus, ii. 432. 

 Achillea, hybrids, ii. 585. 



— peripheral flowers, ii. 187. 



Achillea Clavennae, habitat and hairiness, i, 

 316. 



Achillea Millefolium, anthocyanin, i. 522. 



gall-mites and flower metamorphosisy 



ii. 548. 



Achimenes, ornamental ternary hybridiza- 

 tion, ii. 560. 



Achlya. asexual zoospores, ii. 480. 



— fruit, &c., ii. 480. 



— host for SaprolegniaoeEe and Chytrideae, i. 



170. 

 Achlya lignicola, sexual organs, ii. 671- 

 Achlya prolifera, on flies and fishes, i. 105. 



sporangia, &c., ii. 17. 



swarm-spore formation, ii. 669. 



Achlya raceraosa. host of Rhizidiomyces 



apophysatus, i. 170. 

 Achorion Schcenleinii, cause of ringworm^ 



i. 168. 

 Acid, acetic, from alcohol, i. 505. 



— butyric, i. 463 ; ii. 623. 



— caproic, ii. 202. 



— carbonic. See also Carbonic acid. 



dissociation by symbiotic Algae, i. 254. 



