INDEX 



429 



Luxuriance of vegetative growth, 210- 

 215 



Lycopus europaeus, 188 



Lysimachia, 188 



Lyte's Herbal, 144 



Lythraceae, 175, 188, 193, 234, 303, 311 



Ly thrum Salicaria, 188, 311 



McLean, R. C., on treatment of her- 

 barium material, 331 



Macropodous embryo, 246 (Fig. 159), 

 248 (Fig. 161), 249, 319 (Fig. 166), 

 326 



Madagascar, 305 



Madeira, 295 



"Major plant individual," 211-213 



Manchester, 275, 303 



Marathrum utile, 113 



Marburg, 189 



Mare's-tail. See Hippuris vulgaris 



Marine Angiosperms, 123-135; affini- 

 ties, 123, 320; association with Algae, 

 123; flowers, 126, 127, 129, 130 (Fig. 

 87); fruits, 126, 127, 248 (Fig. 161); 

 leaf anatomy, 125 (Fig. 84), 128 (Figs. 

 85, 86), 130, 131, 132 (Figs. 88, 89); 

 leaves, 124 (Fig. 83), 130 (Fig. 87), 

 133; origin of the group, 133-135; 

 pollen-grains, Conferva-like, 124, 125, 

 126; pollen-grains in strings, 130; 

 pollination, hydrophilous, 124-127, 

 129; seed-coats, 130; vegetative 

 habit, 124 (Fig. 83), 130 (Fig. 87); 

 vivipary, 127 



Marsilea, 284 



Mauritius, 129, 295 



Mayaca fluviatilis, 243 



Mayacaceae, 317 



Mediterranean, 123, 125 



Melilotus Taurica, sleep habits of, 161 



Memory, unconscious, 333 



Mentha aquatica, 201 



Menyanthes, affinities, 313; submerged 

 form ; 199; tendril roots, 205 



Menyanthes irifoliata, 199, 313 



Mercurialis, 311 



Michigan, 288 



Milfoil, Water. See Myriophyllum 



Mimosa lacustris. See Neptunia oleracea 



Mirabilis, 121 



Monocotyledonous families, proportion 

 of, among aquatics, 322 



Monocotyledons, aquatic origin of, 322- 

 326 



Monstera, 142, 314 



Montia, affinities, 310; biennial and 

 perennial forms, 216; submerged 

 xerophyte, 310 



Montia fontana, 216, 310 



Mosses, 113 



M our era, anthocyanin, 113; flowering, 

 120; haptera, 114 



M our era fluviatilis, 113, 114, 120 



Mucilage, 38 (Fig. 20), 47, 271-272, 300 

 Mucilage-secreting trichomes, 13, 15, 



38 (Fig. 20) 



Myriophyllum, affinities, 311, 312; air 

 spaces in roots, 187; in stem, 179 

 (Fig. 116), 256; altitude, 290; ane- 

 mophily, 230, 232; effect of freezing 

 on fruits, 243; on turions, 220; fruits, 

 242; germination of turions, 222 (Fig. 

 145) ; growth in still or moving water, 

 283; habit, 172, 221 (Fig. 144); in 

 biological classification, 6; land form, 

 195, 223 (Fig. 146); on sandy sub- 

 stratum, 286; relation of turions to 

 inflorescence, 224; sleep movements, 

 281; stem anatomy, 178, 179 (Figs. 

 116, 117), 181; submerged leaves, 

 form, 255, structure, 168 (Fig. 109); 

 trichomes, 168-170 (Fig. no) ; turions, 



219, 220, 221 (Fig. 144), 222 (Fig. 



145), 223 (Fig. 146), 224; wave 



motion, 289 



Myriophyllum alternifolium, 168 

 Myriophyllum proserpinacoides, 281 

 Myriophyllum spicatum, 134, 140, 168 



(Fig. 109), 179 (Figs. 116, 117), 195, 



197, 232, 242, 243 

 Myriophyllum verticillatum, 6, 168-170 



(Fig. no), 219, 220, 221 (Fig. 144), 



222 (Fig. 145), 223 (Fig. 146) 



Naiadaceae, 248, 313, 315 



Naias, alien weed with rice and cotton, 

 303; annual, 215; distribution, 304, 

 '305; effect of depth, 279; flower, 315, 

 316, 320, 346; in biological classifica- 

 tion, 6; in deep water, 279, 288; 

 pollination, hydrophilous, 237; re- 

 duction of primary root, 244; root 

 anatomy, 208, 209 (Fig. 140) ; specific 

 differences, 331, 332; stem anatomy, 

 175 ; submerged vegetative organs, 134 



Naias flexilis, 215 



Naias graminea, 237, 303 



Naias graminea, var. Delilei, 332 



Naias major, 209 (Fig. 140) 



Naias marina, 304, 305 



Naias minor, 209 (Fig. 140), 215 



Nasturtium, affinities, 309; air and 

 water shoots, 201; budding from 

 leaves, 216 



Nasturtium amphibium, 201, 309 



Nasturtium lacustre, 216 



Nelumbium. See Nelumbo 



Nelumbo, absence of mucilage, 257, 272; 

 affinities and structure, 38, 39; 

 geologic distribution, 38, 39 (Fig. 21); 

 movements of gases, 257, 258 ; possible 

 case of reversion from aquatic to 

 terrestrial life, 39; stability of seed- 

 ling, 245 



Nelumbo Nelumbo, 38, 39 (Fig. 21) 



Nelumbonoideae, 38 



