5o8 



INDEX. 



Kel[),s, i6S 

 Kingdom, 492 



LabiatjE, 423, 501 



Laboulbeniales, 218 



Labrador tea, 499 



Lactuca canadensis, 460 



Lactuca scariola, 409, 460, 461 



Lagenidiuni, 214, 215 



Laminaria, 168, 169 



Lamiuin, 424, 501 



I^arth, 367 



Laurel, 499 



Leaf patterns, 404 



Leathesia difformis, 16S 



Leaves, form and arrangement, 3S3- 

 391; function of, 387; protective 

 modifications of, 392; protective 

 positions, 395 ; reduction of sur- 

 face, 394; relation to light, 397; 

 structure of, 40-43, 131, 391, 393 



Legumes, 92, 93, 453 



Leguminosa; ( = Papilionacecc), 396, 



399 

 Ijcitneria floridana, 494 

 Leitneriales, 4c;4 

 Lemanca, 171, 173, T75, 492 

 Lemna, 41S 

 Lcmna trisulca, 26, 27 

 Lenticel, 357, 35S 

 Lepiola nauiina, 20S 

 Ix-ttuce, 502 

 Leucojilast, 71 

 Lichens, 86, 93-95, 220, 221 

 Light, 465 

 I^iliace^e, 490, 493 

 laliales, 490, 493 

 Lilium, 489-493 

 Linaria vulgaris, 501 

 Linden, 498 

 Linum vulgaris, 497 

 I^i[)ase, 108 

 Lif|uidambar, 496 

 Liriodrndron, 496 

 Live-fi)re\-er, 394 

 Li\er\\'orts, 222—239; absorptifMi 1)\', 



23-25; classification of, 242 

 IjObelia, 501 

 Lupinus percnnis, 353 

 L\'Coperdales, 220 

 Lycopodiacece, 296 

 L}'copodiales, 296 

 I^yco]iodiine;c, 296 

 Lycopodiuni, 284-2S6 



Macrosporangium, 94, 302, 304, 311. 



31^. 321 

 Macrospore, 287, 290, 326-328, 434 

 Magnolia, 496 

 Mallow family, 498 

 Malvales, 498 

 Maple family, 497 

 Marchantia, 24, 226-236 

 Marchantiales, 242 

 Marine plant societies, 486 

 Marratiales, 295 

 Marsilia, 370 

 Marsihaceae, 296 

 Matoniaces, 295 

 Medicago denticulata, 92 

 Medulla, 50 



Members of the flower, 335 

 Members of the plant, 349-353 

 ]\Ieristem, 359 

 Mesocarp, 450 

 Mesophytes, 467 

 Microsporangia, 294, 299 

 Microspore, 2S7, 2f)o, 299, 312, 



435 

 Microsporophylls, 29(1, 320, 420 

 Milkweed family, 500 

 Mimosa, 132, 396 

 Mimulus, 501 

 Mint family, 501 

 Mistletoe, 84,^495 

 Mitchella, 501 

 Mixotrophic plants, 85 

 IMnium, 243-246 

 IMolds, nutrition of, S6-90 

 Molds, water, 181 

 Monadelphous, 424 

 Monoblepharidales, 215 

 Monoblepharis, 215 

 Monocotyledons, 490, 492 

 Monoecious, 435 

 Monotropa uniflora, 499 

 Morchella, iijS, i()9 

 Morel, iii8, 100 

 ^lorning-glories, 500 

 Mosaics, 405 

 iMosses, 243-248, 457; absorption 



by, 25; classilication of, 24S 

 Mucor, 6, 7, 15, 118, 119, 177-iSo, 



215 

 Alucorales, 2 i 5 

 Midberr}', 704 

 Mullein, 366, 394, 501 

 Mushrooms, 199-208 

 Mustard family, 496 



