INDEX. 



The page numbers in holder type indicate illustrations. 



Abftno, SpluerotQiu in hot springs at, L 554. 



Abela 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 oviiles, ii. 72. 



Abies excelsa and galls of Chenues abietis, 



ii. 5H. 



cone characteristics, ii. 725. 



egg-cells, ii. 419. 



embryo development, ii. 438. 



flower-opening constant, i. 559. 



IHne-apple Gall on twigs, ii. 534. 



stamen, ü 87. 



various dimensions, i. 722. 



vertical range, i. 527. 



Abies Orientalis, cotyledons, i. 621. 

 Abies pectinata, i. 717- 



and .^>;idiura elatiaum, ii. 523, 527. 



annual rings and sinkers of Mistletoe, 



l210. 



bract scale, ii. 440, 441, 721. 



cone. Ü. 441, 721, 725. 



embryo development, iL 438. 



oruliferoos scales, ii. 441. 



Abietineae. 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, L 86. 



fungal hypbsa a substitute for, i. 249. 



in Lencobryum. &c, i. 86. 



in Nepenthes pitcher, L 135. 



in special cavities and grooves in leaves, 



i. 230. 



of Bartsia, i. 180. 



of Cuscuta, of Cassythse, L 176. 



of foUage-leaves, other than trichomes, 



restricted action, i. 230. 



of Lathnea, i. 182. 



of leaves, conditions of action, L 227. 



of MUdews, i. 166. 



of Orchid atrial roots, i. 223. 



of Plagiothecium. i. 85. 



of Rhinanthacese. i. 178. 



of root«, permeability. Jtc, L 226. 



of Saprophjrtes, 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, L 236. 



position of. i. 88. 



replaced by mycelium, i. 91. 



ihape 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 carities and cups on foliage- 

 leaves, i. 233. 



— organs, of some Plumbagineie. i. 234. 

 Abu-Ariscb, Arabia, shade temperature, i. 



556. 

 AbutUon Avicennse. 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 lophantba, Australia, leaf, diurnal 



imsitions, 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, 1 



281. 



leaf metamorphoses, i. 637. 



phyllodes, 1. 335. 



wax on leaves, 4c., i. 292, 312. 



Acalypha, stamen, ü. 87- 

 Acanthaceae, 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, &c.. i. 235. 



leaf, and section of part, i. 233. 



hme incrustations, i. 235. 



Acanthophylluni, 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-sprinkhng apparatus, ii. 273. 



— protection of pollen from wet, ii. 110. 

 Acanthus longifolius, flower, and pollen- 

 sprinkling apparatus, ii. 273. 



Acanthus mollis, habit, iL 772. 



mildew of, L 166. 



seed-dispersal, ii. 833, 835. 



Acanthus spinoaissimus, i. 437. 



Acanthus spinosus, pollen-sprinkling, ii. 273. 



Acanthus spinulosus, hybrid of A mollis x A. 



spinostssimus, U. 586. 

 Acarina, L 138. 



Acarospora glaucocarp». habitat, L 117. 

 Acarus, prey of Utricularia montana, t. 123. 

 Acaulescent Geutians, autogamy, ii. 387. 



Acaulescent Violas, cleistogamy, ii. 393. 

 Accessory organs, of flowers, ii. 71. 



— substances, of plants, i. 460. 



Acer and Gledi tschia triacanthos, st ruggle 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, L 753. 



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



— vernation, L 350. 



Acer campestre, mite-galls, ii. 529. 



Acer Monspessulanum, seed-dispersal, ii. 



853. 

 Acer platanoides, distribution of sexes, iL 



297. 



flower-opening constant, i. 559. 



leafy twig, i. 416. 



normal and sucker leaves, ii. 516. 



'- seedling, i. 9. 



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. 583. 

 Acerosae. of Braun, ii. 605. 

 Acetabularia, colonies, i. 585. 



— marine Ume accumulators, i. 261. 

 Acetabularia mediterranea, structure, 4c. 



ii. G46. 

 Acetabulariie, differentiation of thallus, ii 



646. 

 Acetic acid, from alcohol, i. 506. 

 Achene, embryo protection, ii. 450. 



— nature of, ii. 429. 



— of Gnaphalium alpinum, ii. 84. 

 Achenes, with pappus, ii. 432. 

 Achillea, hybrids, ii. 585. 



— peripheral flowers, ii. 187. 



Achillea Clavennse, habitat and hairiness, L 



316. 

 Achillea Millefolium, anthocyanin, i. 522. 



gall-mites and flower metamorphosis, 



ii. 548. 

 Achillea ochroleuca. L PI. VI. 

 Achimenes, ternary hybridization, iL 560 

 Achlya. asexual zoospores, ii. 480. 



— fruit, 4c., ii. 480. 



— host for Saprolegniaceaa and Chytride», i. 



170. 

 Achlya lignicola, sexual organs, iL 671. 

 Achlya prolifcra, on flies and flshes, L 105. 



siK>rangia, &c., ii. 17. 



swarm-spore formation, ii. 669. 



Achlya racemosa, host of Rhizidipmyces 



apopbysatus, i. 170. 

 Achorion Schoenleinii, cause of ringwonn, 



i. 168. 

 Acid, acetic, from alcohol, L 506. 

 -butyric. L 463; ii. 623. 



— caproic, ii. 202. 



— carbonic. See also Carbonic acid. 



dissociation by symbiotic Alga;, i. 254. 



