INDEX. 



The page numbers in bolder type indicate illustration*. 



Abano, Sphserotilus in hot springs at, i. 554. 



Abele. See Populus alba. 



Abies, and Witches' Broom, ii. 526. 



axillary buds, ii. 29. 



fertilization, ii. 420. 



green cotyledons, ii. 622. 



needles, ii. 725. 



pollen storing and dispersion, ii. 145. 



protection of ovules, ii. 72. 



Abies excelsa and galls of Chermes abietis, 

 ii. 544. 



cone characteristics, ii. 725. 



egg-cells, 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, 



i. 210. 

 bract scale, ii. 440, 441, 721. 



cone, ii. 441, 721, 725. 



embryo development, ii. 438. 



ovuliferous scales, ii. 441. 



Abietinese, arrangement of scales, ii. 440. 



distinguishing feature, ii. 721. 



embryo development, ii. 438. 

 Abronia, unequal cotyledons, i. 622. 

 Absorbent cells, i. 765. 



of cotyledons, i. 599, 600. 



Absorption bands of chlorophyll spectrum, i. 



372. 



Absorption-cells, i. 87, 217. 

 capitate or glandular, of multicellular 



hairs, mode of action, i. 229. 



controlling influences, i. 90. 



form of, i. 86. 



fungal hyphae 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 Lathrsea, i. 182. 



of leaves, conditions of action, i. 227. 



of Mildews, i. 166. 



of Orchid aerial roots, i. 223. 



of Plagiothecium, i. 85. 



of Rhinanthaceae, i. 178. 



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



of Saprophytes, i. 114. 



of Stellaria media, i. 228. 



of Thesiuin, i. 177. 



of TJtricularia bladders, i. 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 Plumbagineas, i. 234. 

 Abu-Arisch, Arabia, shade temperature, i. 



556. 

 Abutilon Avicennae, autogamy, ii. 355. 



cross-fertilization, ii. 304. 



Acacia. See also Robinia Paeudacacia. 



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, L 634. 



unprotected pollen, ii. 107. 



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



1%. 

 Acacia lophantha, Australia, leaf, diurnal 



positions, i. 534. 



Acacia spadicigera, myrmecophilous, ii. 233. 

 Acacia sphserocephala, myrmecophilous, ii. 



233. 



Acacias, Australian, coloured stamen fila- 

 ments in, ii. 183. 



distribution of stomata on phyllodes, i. 



281. 



leaf metamorphoses, i. 637. 



phyllodes, i. 335. 



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



Acalypha, stamen, ii. 87. 

 Acauthacese, ii. 771. 



and cold, i. 545. 



inflorescence, i. 746. 



pollen-sprinkling apparatus in, ii. 271. 



scarlet flowers in, ii. 1%. 

 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. 



Acantholiraon Senganense, absorptive or- 

 gans, &c.. i. 235. 



leaf, and section of part, i. 233. 



lime incrustations, i. 235. 



Acanthophyllum, leaves, i. 434. 

 Acanthus, and insect visits, ii. 223. 



colour -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- 

 sprinkling 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 TJtricularia montana, i. 123. 

 Acaulescent Gentians, autogamy, ii. 387. 

 025 



Acaulescent Violas, deistogamy. ii. SO. 

 Accessory organs, of flowers, ii. 71. 



- HftHMMft oCptaafc, i 4.-,. 



Acer and G leditschia triacantboa, st niggle for 

 existence, ii. 515. 



and Nectria, ii. 678. 



- arrangement of foliage-leaves, L 92. 



- colour of flowers and flies, it 197. 



- from chalk, ii. 613. 



green cotyledons, i. 622. 



- hybrids in, ii. 584. 



mechanical tissue arrangement, i. 7. 



roots, i. 753. 



texture of so-called mite-galls, ii. 832. 



vernation, L 350. 



Acer campestre, mite-galls, ii. 689. 



Acer Monspessulanuro. seed-dispersal. 1L 



853. 

 Acer nlatanoides, distribution of sexes, it 



297. 



flower-opening constant, L 668. 



leafy twig, L 416. 



normal and sucker leaves, ii. 616. 



twig and elongation of leaf-stalks, L 



419. 



venation, L 631. 



Acer Pseudo-platanus, distribution of sexes, 

 ii. 297. 



imperfect flowers, ii. 295. 



Acer rubrum, i. 488. 



Aceras and Orchis, hybridization, ii. 683. 

 AcerosjB, of Braun, ii. 6C5. 

 Acetabularia, colonies, i. 585. 



marine lime accumulators, i. 261. 

 Acetabularia mediterranea, structure, Ac. 



ii. 646. 

 Acetabulariw, differentiation of thallus, 11 



646. 



Acetic add, from alcohol, i. 606. 

 Achene, embryo protection, ii. 450. 



nature of, ii. 429. 



of Gnaphalium alpinum, ii. 84. 

 Achenes, with pappus, ii. 432, 

 Achillea, hybrids, ii. 685. 



peripheral flowers, ii. 187. 



Achillea Clavennw, habitat and hairiness, i. 

 316. 



Achillea Millefolium, anthocyanin, i. 622. 



gall-mites and flower metamorphosis, 



ii. 548. 



Achimenes, ornamental ternary hybridiza- 

 tion, ii. 560. 



Achlya, asexual zoospores, ii. 480. 



fruit, Ac., ii. 480. 



host for Saprolegniaceie and Cbytridea, 1. 



170. 



Achlya lignioola, sexual organs, ii. 671. 

 Achlya prolifera, on flies and fishes. L 106. 



- - sporangia, Ac., ii. 17. 



- - swarm-spore formation, ii. 669. 

 Achlya racemoea, host of Rhizidiomyce* 



apophysatus, i. 170. 

 Achorion Schcenleinii, cause of ringworm. 



i. 168. 



Acid, acetic, from alcohol. L 606. 

 -butyric, i. 463; ii. 623. 



caproic, it 202. 



carbonic. See also Carbonic acid, 

 dissociation by symbiotic Algse, L 254. 



