INDEX. 



441 



Macrosporangium, 194-199 ; of 



pine 207, 209; of cycas, 214; of 



trillium, 224 

 Macrospore, 194-199 ; of angio- 



sperms, 229 

 Maple, 273, 274 

 Marattia, fertilization, 182 

 Marchantia, nutrition of, 70, 71; 



structure and development, 



144-153 

 Marsh marigold, 268, 269 

 Medicago denticulata, 319 

 Medulla, 44 



Micrasterias (Mi-cras-te'ri-as), 9S 

 Microsomes (Mi'cro-somes), 6 

 Microsphaera (Mi-cro-sphas'ra), 



138 

 Microspore, 194, 197, 199; of pine, 



204; of cycas, 215; of trillium, 



223 

 Milkweed, dissemination of seed, 



372 

 Mint family, 286 

 Mitchella repens, 288 

 Mnium affine (Mni'um af'fi-ne), 



72, 74, 158-161 

 Monaster, 241 

 Monocotyledons, 251-261, 294, 



296 

 Monotropa, 283 

 Morning glory, 284 

 Mosses, nutrition of, 72; struc- 

 ture of, 158-163 

 Mougeotia (Mou-ge-o'tia), 98 

 Moulds, nutrition of, 322 

 Mucor, 6-8, 120-123; osmose in, 



15; mycelium, 6 

 Mushrooms 136; studies of, 326- 



337; poisonous, 334, 335 

 Mustard, 272 

 Mutualism, 318 

 Mycelium 6, 76, 121, 136; sterile 



in coal mines, 325, 326 

 Mycorhiza, 320 

 Myrtifloraa, 280, 298 



Nettle (dicecious), 265 

 Nightshade (family), 285, 299 

 Nitella, 8, 9 

 Nitrogen, gathered by plants, 



318- 

 Nostoc, 118 

 Nucellus, 209-211 

 Nuclear plate, 241 



Nuclear spindle, 241 



Nucleolus, 4 



Nucleus 3; morphology of, 239- 



244 

 Nuculiferas, 286 

 Nutation, 80 

 Nutrient solution, 22 

 Nutrition, means for, 70-72; 



further studies in, 314 



Oak, 263 

 Oat, 258 

 GEdogonium (CE-do-go'ni-um), 



99-103 

 Oenothera biennis, 279, 280 

 Onoclea sensibilis (On-o-cle'a 



sen-sib'i-lis), rhizome, 168; 



dimorphism of, 340-345 

 Onograceae, 280, 298 

 Oogonium (O-o-go'ni-um), 99, 



100, 102, 107, 108, 112, 123, 124, 



127 

 Oospore, 100, 108, 128 

 Orchidaceas, 255, 256, 296 

 Orchids, pollenation of, 360-363 

 Oscillatoria (Os-cil-la-to'ri-a), 118 

 Osmose, 13, 18 

 Ostrich fern, 345, 346 

 Ovule of pine, 207; of trillium, 



224 

 Oxygen, 51, 52, 54 



Palisade cells, 37 



Palms, 257; cocoanut palms, 257 



Papaveraceas, 271 



Papilionaceae, 278, 295, 298 



Pappus, 291 



Paraheliotropic, 88 



Paraheliotropism(Par-a-he-li-ot'- 



ro-pism), go 

 Parasitic fungi, nutrition of, 322, 



323 

 Parenchyma, 44, 48 

 Parmelia, fruit of, 318 

 Parsley, 281 

 Parthenogenesis, 127 

 Partridge berry, 288 

 Passiflorinae-, 298 

 Pea (family), 278 

 Pear, 277 

 Peltigera, 316, 317 

 Pepper, 235 

 Pepper root, 225 

 Perigynium, 260 



