426 



INDEX 



Geophytes, aquatic, 217, 323 



Geotropism, 281, 282 



Germany, 17, 53, 290. 299 



Germination, delayed, 36, 71, 72, 243, 

 244; in situ, 80, 127, 246, 248; of 

 various genera, see heading. Seedlings 



Giant Waterlily. See Victoria regia 



Gill-tufts of Oewowe, 1 18, 1 19 (Fig. 81), 255 



Glechoma hederacea, 5 



Glyceria, aquatic grass, 317, 318; dis- 

 tributed by birds, 301 



Glyceria aquatica, 317, 318 



Glyceria fluitans, 301, 317 



" Gramen bulbosum aquaticum," il 



Gramineae, 317, 318, 326 



Grass-wrack. See Zostera 



Grasses in Lake Ellis, 286 



Grew, Nehemiah, on flower colour of 

 aquatics, 230; on heterophylly, 154, 



155 



Griffithiella Hookeriana, 114 



Ground Ivy. See Glechoma hederacea 



Guiana, British, 109, 118, 119, 300 



Guiana, French, 113 



Gunner a, gigantic herb, 181; polystely, 



180-182, 346 

 Gunner a scabra, 181 

 Gunnereae, 312 



Hairs, absence in submerged leaves, 165, 

 166 ; absence in water forms of amphi- 

 bious plants, 151, 152 (Fig. 99); change 

 in character of hairs of Rubus when 

 submerged, 200; growth of hairs due 

 to wounding of Waterlily petiole, 258 ; 

 loss of hairs of Mentha when sub- 

 merged, 201 ; mucilage-containing 

 hairs of Ceratophyllum, 86, 87, 272; 

 mucilage-secreting hairs of Nymphae- 

 aceae, 38 (Fig. 20), 272 ; Myriophylliim 

 trichomes, 168, 169, 170 (Fig. no); 

 Polygonum amphibium, hairs on air 

 leaves only, 151, 152 (Fig. 99); Utricu- 

 laria, hairs of bladders, 92 (Fig. 60), 93 

 (Fig. 61), 94, 95 (Fig. 62); Utvicularia, 

 protective hairs of turions, 101, 102, 

 220 (Fig. 143^4); sensitive hairs of Al- 

 drovandia, 1 1 1 ; stipular hairs of Nyni- 

 phaea liitea, 26; see also under Root- 

 hairs and Squamiilae intravaginales 



Halodule, anatomy of vegetative organs, 

 132 (Fig. 88), 331; marine Angio- 

 sperm, 123 



Halodule uninervis, 132 (Fig. 88) 



Halophila, anatomy, 131, 169; in bio- 

 logical classification, 6; leaf form, 

 124; marine Angiosperm, 57, 123; 

 pollen-grains in strings, 130; pollina- 

 tion, hydrophilous, 130, 236; structure 

 and life-history, 129, 130 (Fig. 87); 

 styles filiform, 130 



Halophila ovalis, 129, 130 (Fig. 87) 



Halophila ovata, 129 



Halophila siipulacea, 129, 130 



Haloragaceae, 180, 205, 311, 312 



Haloragideae, 312 



Haptera of Podostemaceae, 114; of 

 Tristichaceae, 113 



Hawthorn, pigmented variety, 276 



Heliotropism, 281 



Helobieae, 52, 123, 124, 245, 248, 313, 

 314, 318, 319, 320, 321, 325, 326 



Herbarium material, use in anatomical 

 work, 331 



Herbarum vivae eicones of Brunfels, 27 

 and Frontispiece 



Herminiera elaphroxylon, 192 



Heteranthera, cleistogamy, 234 (Fig. 

 153); phyllodic leaf anatomy, 342 

 (Fig. 170), 343, 344; root differentia- 

 tion, 207; support of inflorescence, 

 228; water pores and apical opening, 

 268 



Heteranthera dubia, 234 (Fig. 153) 



Heteranthera renifotmis, 342 (Fig. 170), 



343. 344 



Heteranthera zosteraefolia, 207, 228, 268, 

 342 (Fig. 170), 343, 344 



Heterophylly, 143-162, et passim 



Himanthalia lorea, 114 



Hippuridaceae, 312 



Hippuris vulgaris, affinities, 311, 312; 

 altitude, 290; anemophily, 230, 232; 

 diaphragms of stem, 184 (Fig. 119), 

 257; flowers, 230, 231 (Fig. 151); fruit 

 dispersal. 297; heterophyllv, 141, 146, 

 147 (Fig. 95), 148 (Fig. 96), 231 (Fig. 

 161); in biological classification, 6; 

 nutlets, 242; perenniation, 215; re- 

 duction of primary root, 244 ; rhizome, 

 173 (Fig. 112); root-hairs from 

 "collet," 245; stem, 172, 173; stem 

 anatomy, 175-178 (Fig. 115), 181, 

 184 (Fig. 119 ), 185 (Fig. 120); sto- 

 mates, 166; tenderness of leaves, 163 



Holland, 303 



Horned Pondweed. See Zannichellia 



Hornwort. See Ceratophyllum demersum 



Horse Chestnut, submerged germina- 

 tion, 199 



Hottonia palustris, affinities, 312, 318; 

 in biological classification, 6, 7 ; land 

 and water forms, 197 (Fig. 127); leaf 

 anatomy, 169; non-cleistogamic, 233; 

 polystely, 181 ; ripening of fruit in air, 

 239; sinking of seeds, 297; support of 

 inflorescence, 228; vegetative repro- 

 duction, 216 



Hyacinth, Water. See Eichhornia 

 speciosa 



Hydrilla, in Britain, 54, 55; leaves^ 57; 

 spathe, 315; tendril roots, 205 (Fig. 136) 



Hydrillaverticillata, 54, 55, 205 (Fig. 136) 



Hydrilleae, 175 



Hydrobryum, 114, 115 (Fig. 76) 



Hydrocaryaceae, 311 



