INDEX. 



441 



Macrosporangium, 194-igg ; of 



pine 207, 209; of cycas, 214; of 



trillium, 224 

 Macrospore, 194-199 ; of angio- 



sperms, 229 

 Maple, 273, 274 

 Marattia, fertilization, 1S2 

 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), gS 

 Microsomes (Micro-somes), 6 

 Microsphfera (Mi-cro-sphae'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), g8 

 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 

 Myrtiflorffi, 280, 298 



Nettle (dioecious), 265 

 Nightshade (family), 285, 299 

 Nitella, 8, 9 

 Nitrogen, gathered by plants, 



31.8 

 Nostoc, 118 

 Nucellus, 209-211 

 Nuclear plate, 241 



Nuclear spindle, 241 



Nucleolus, 4 



Nucleus 3; morphology of, 239- 



244 

 NuculiferEe, 286 

 Nutation, 80 

 Nutrient solution, 22 

 Nutrition, means for, 70-72; 



further studies in, 314 



Oak, 263 

 Oat, 258 

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



99-103 

 Qinothera biennis, 279, 280 

 Onoclea sensibilis (On-o-cle'a 



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



dimorphism of, 340-345 

 Onogracex, 280, 298 

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



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



127 

 Oospore, 100, 108, 128 

 Orchidaceae, 255, 256, 296 

 Orchids, pollenation of, 360-363 

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

 Osmose, 13, iS 

 Ostrich fern, 345, 346 

 Ovule of pine, 207; of trillium, 



224 

 Oxygen, 51, 52, 54 



Palisade cells, 37 



Palms, 257; cocoanut palms, 257 



Papaveraceae, 271 



Papilionaceae, 278, 295, 298 



Pappus, 291 



Paraheliotropic, 88 



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



ro-pism), 90 

 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 



