INDEX 



453 



Mains (apple), 408 

 Mandrake, flower of, 161, 162* 

 Mandrake, fruit of, 166 

 Mandrake, ovules and seed of, 165* 

 Mandrake, pollen and ovary of, 164* 

 Mandrake, seedlings and fruit of , 166* 

 Map of forest areas, 368* 

 Maple, 390*, 391* 

 Maple, bird's-eye, 392 

 Maple, curly, 392 

 Maple, flowers of, 390* 

 Marigold, marsh, 307*, 339* 

 Mass culture, 205 

 Materials of environment, 5 

 Mechanism of movements, 28 

 Megasporangium, 317, 318* 

 Megaspore, 165*, 317, 318*, 319* 

 Megaspores, homology of, 349* 

 Megasporophyll, 317, 318* 

 Megasporophylls, morphology of, 341* 

 Mendel, Gregor, 185 

 Mendelian ratio, 186 

 Mendel's laws, 184*, 188*, 189*, 190* 

 Mendel's principles of heredity, 184* 

 Meristem, 61, 62*, 63* 

 Mesophyll of leaf, 114, 115* 

 Mesophytes, 146, 147* 

 Mesophytic association, 435, 436* 

 Mesophytic vegetation, 147* 

 Metaphase, 75*, 77 

 Metaplasmic bodies, 52 

 Micropyle, 162*, 164, 165* 

 Microsporangium, 317, 318* 

 Microspore, 317, 318*, 319* 

 Microspores of Selaginella, spruce, 



and mandrake, 348 

 Microsporophyll, 317, 318* 

 Microsporophylls, morphology of, 341* 

 Midvein of leaf, 113*, 115* 

 Migration and invasion, 438 

 Migration of plants, 436 

 Milkweed, leaf structure of, 113*-116* 

 Mimosa (sensitive plant), 58. 

 Mirabilis, crossing of, 186* 

 Mitosis, 73-80 

 Mitosis, function of, 73 

 Mitosis, phases of, 75*-80 

 Mitosis, process of, 74 

 Mold, Aspergillus, 266* 

 Mold, black, 259*, 260, 261* 

 Mold, blue, 264*, 265* 

 Molds, 258-267 

 Monocotyledons, 416 

 Monocotyledons, structure of, 108, 109* 

 Monocotyledons and dicotyledons, 



413, 414*, 415 

 Monoecious, 360, 385* 



Morning-glory, Darwin's experiments 



with, 176 

 Morphology, 213 

 Moss, 292* 

 Mosses, 293, 296 



Mosses, Funaria, 293, 294*, 295* 

 Motor organs, pulvini, 29*, 39* 

 Mucronate leaf point, 355* 

 Musci, 293, 296 

 Mushrooms, 267*-271 

 Mushrooms, Amanita, 267* 

 Mushrooms, spore formation of, 268*, 



269* 



Mustard family, 400 

 Mutations, 199 

 Mutations in (Enothera, 200*, 202*, 



203* 

 Mycelium, 258 



Nageli, 55, 56 



Nasturtium, phototropic response of, 



26* 



Neck-canal cells, 289* 

 Nectar of flowers, 362 

 Node, 4*, 15*, 16*, 17* 

 Nuclear division, 73, 75*, 80 

 Nucleolus, 47*, 53 

 Nucleus, 47*, 53, 55 

 Nursery of yellow pine, 377* 

 Nut, 364*, 365, 385* 

 Nutrition, 117 

 Nutrition of animal, 9* 

 Nutrition of greerrplant, 8* 

 Nyctitropic (sleep) position, 38, 40 



Oak, sections of, 89* 



Oak, white, 383*, 384*, 385* 



Oak stem, structure of, 86* 



Oat, inflorescence and flowers of. 



433*, 434* 



Oblanceolate leaf, 355* 

 Oblong leaf, 355* 

 Obovate leaf, 355* 

 Obtuse leaf apex, 355* 

 Odor of flowers, 362 

 (Edogonium, 233, 235 

 (Edogonium, asexual reproduction, 



235* 



(Edogonium, sexual reproduction, 234* 

 (Enothera, seedlings of, 202 

 (Enothera gigas, 203* 

 (Enothera lamarckiana, 199*, 200*, 



203* 



(Enothera, lata and nanella, 200 

 Oogonium, 231* 

 Oogonium in Vaucheria, 230 

 Operculum of moss, 295* 



