[ 422 ] 



INDEX 



[The names of authors which occur in the bibliography are not included in the following 



index, since page references are given in connexion with the titles in the bibliography, 



which thus also serves as an index of authors' names] 



Acacia phyllode, 340 



Achillea ptarmica, 5, 199 



Acquired characters, inheritance of, 



333. 334 



Adaptation, 171, 332-335 



Aedemone mirabilis. See Herminiera 

 elaphroxylon 



Aerating system, in tissues of hydro- 

 phytes, 183-194, 256-259; of root, 

 185-187; of stem, primary, 183-185; 

 of stem, secondary, 187-194 



Aerenchyma, 187-194; from cambium, 

 191-192; from phellogen, 187-191, 



193-194 

 Aeschynomene, aerenchyma, 191, 192 

 Aeschynomene aspera, 191 

 Aeschynomene hispidula, 191-192 

 Affinities of hydrophytes, 308-321 

 Africa, 213, 295, 298, 305 

 "Age and Area" in plant distribution, 



305-307 

 Air spaces, lysigenous, 184, 185 

 Air spaces, schizogenous, 184, 185 

 Aldrovandia, afi&nities, 310; carnivorous 



habit, iio-iii, 270; embryo, no; 



fruit ripening under water, 239 ; roots, 



absence of, 109, no, 204, 244; seed, 



no; sensitive leaves, no, in (Fig. 



75) ; shade plant, 289; stem anatomy, 



175; turions, no, 219 

 Aldrovandia vesiculosa, 8, 109-111 (Fig. 



75), 289. 310 

 Algae, 113, n4, 123, 124, 142, 155, 172 

 Aliens, 303 

 Alisma, effect of freezing on fruit, 243; 



fruit, 242; germination and rupture 



of seed coats, 244; heterophylly, 19, 



20; land and water plants, 153 (Figs. 



loi and 102); ranalean features, 320 

 Alisma graminifolium, 19, 20, 23, 157, 



280 

 Alisma natans, 234 

 Alisma Plantago, 19, 20, 23, 151, 153 



(Figs. loi, 102), 156, 169, 242, 243, 



244, 289, 297 

 Alisma ranunculoides . See Echinodorus 



ranunculoides 

 Alismaceae, 5, 9-23, 24, 33, 151, 156, 



195, 224, 248, 297, 313, 314, 319, 337, 



346 



Alocasia, 303 



Aloe, Water. See Stratiotes aloides 



Alps, 290 



A Ithenia, bracts, 3 1 6 ; in brackish water, 



134; perigonium, 316; reduced stem 



anatomy, 63, 173 

 A Ithenia filiformis, 1 73 

 Altitude above sea-level, 289-291 

 Amazons, 31, 99, 113, 229 

 "Ambatsch," 192 

 Ambulia, affinities, 313; heterophylly, 



Ambulia hottonoides, 151 



America, 61, 108, 120, 190, 193, 210, 

 216, 286, 290, 295, 298, 312, 313 



American Indians, 17, 118 



Ammania, 303 



Amphibious plants, effect of water 

 upon, 201, 202 



"Amphibolis zosteraefolia," 123 



"An Idea of a Phytological History," 230 



Anacharis. See Elodea 



Andes, 291 



Anemophily. See Pollination, anemo- 

 philous 



Anemophytes, 143 



Angiosperms, Marine. See Marine An- 

 giosperms 



Anthocyanin, 15, 17, 113, 276-278 



Apical openings in leaves, of Callitriche, 

 268 (Fig. 163); Heteranthera, 268; 

 Littorella, 269; Pistia, 82 (Fig. 53); 

 Potamogeton, 167 (Fig. 108), 268, 269; 

 Potamogetonaceae, 133; Zoster a, 269 



Aponogeton, affinities, 314; disarticula- 

 tion of primary root, 244; distribu- 

 tion, 305; fenestration, 142 (Fig. 91), 

 143; geotropism, 281; heliotropism, 

 281; heterophylly, 154; undulated 

 leaf, 62 



Aponogeton angustifolius, 143 



Aponogeton Bernerianus, 142 



Aponogeton distachyus, 215, 244, 281 



Aponogeton fenestralis, 142 (Fig. 91), 

 143, 281, 314 



Aponogeton ulvaceus, 62 



Aponogetonaceae, 239, 248, 305, 313, 



314. 315 

 Aquilegia, 314 

 Araceae, 74, 82, 314, 315 



