500 



INDEX 



Liverworts, horned, 292 

 Living substance, 1-6 

 Livingston, 183 

 Lobelia, 484, 485 

 Lockjaw, bacillus, 155, 163 

 Lodicules, 407, 408 

 Lomentum, 455 

 Loosestrife, 473, 474 

 purple, 462, 463 

 Lycogala, 150 

 Lycoperdales, 266, 267 

 Lycoperdon, 266 

 Lycopodiaceae, 343 

 Lycopodiales, 341 . 

 Lycopodium, 341, 342, 343, 345 

 Ly thrum, 462, 463 



Macrocystis, 205 



Madder order, 481 



Malus, 451 



Maple, 457, 458, 459 



Marattiales, 516 



Marchantia, 274, 282, 284, 285, 286, 



287 

 Marchantiales, 271 

 Massee, 245 

 Massula, 425 



Mechanical structure, 78, 83 

 Medullary ray, 92, 93, 94, 314-31S 

 Megasporangia, 348, 336, 380, 388, 



389. 391 

 Megaspore, 117, 118, 339, 347, 348, 

 367, 368, 380, 388, 390 

 germination of, 118, 119 

 Megasporophyll, 117, 348, 355, 367, 



379. 380, 389, 397 

 Meibomia, 455 

 Melandryum, 383, 437 

 Melosira, 168 

 Mendel, 142 

 Mendel's Law, 142 

 Mesophyll, 9, 10 

 Mesophytes, 39 

 Metchnikoff, 158 

 Micropyle, 117, 118, 355, 356, 368, 



380 

 Microsphaera, 247 

 Microsporangia, 348, 365, 379 



Microspore, 116, 339, 347, 348 



germination of, 120, 122, 349, 

 350, 357, 358, 369, 392, 454 

 Microsporophyl, 117, 348, 355, 365 



379 



Micrasterias, 188 

 Mildews, downy, 220, 223 



powdery, 244, 245 

 Mimosa, 35, 36 

 • Minerals in soils, 48 

 Mint family, 476 

 Mistletoe, 64 

 Mnium, 302 

 Moccasin flower, 422 

 Monkshood flower, 441 

 Monocotyledons, 96, 125, 400 

 Monoecious, 284 

 Monotropa, 472 

 Morchella, 231, 232 

 Morel, 231, 232 

 Morning-glory, 475 

 Mosaics, 32 

 Moss, 295 



bog or peat, 296 



chloroplasts, 17 



scale, 290 



true, 301 

 Mould, black, 224, 225, 226 



brown, 240 



blue-green, 217, 240 



water, 218 

 Movements, gases, 12, 21, 45 



leaf, 33-36 



root, 61 



stem, 104 



water, 24, 50, 54 

 Mucorales, 224 

 Mushrooms, 217, 259, 260 

 Mu§ci, 295 

 Mustard family, 444 

 Mutation, 144 

 Mycelium, 217 



Mycorrhiza, 68, 243, 296, 317, 422 

 Myrtales, 462 

 Myrtle order, 462 

 Myxomycetes, 149, 150, 151 

 Myxobacteriales, 153 



