INDEX 



487 



Mesophytes, 426. 

 Mesquite tree, 28. 

 Metabiosis, 125. 

 Metabolism, 106, 117. 

 Metroxylon laevis, 400. 

 Metroxylon rumphii, 400. 

 Micrococcus, 135, 245. 

 Microcycas, 370. 



Micropyle, i, 183, 361, 381, 386. 

 Microsphsera alni, 263, 264. 

 Microsporangia, 379, 380. 

 Microspore, 248, 360. 

 Microspores, of pine, 360. 

 Microsporophyll of Angiosperms, 



379- 

 Microsporophyll of Cycas, 367; of 



Zamia, 368. 



Microsporophylls, 360, 379. 

 Migration of plants, 431. 

 Mildews, 246, 256-260, 262-265. 

 Mimosa, 410. 

 Mimosa pudica, 80. 

 Mistletoe, 128. 

 Mitchella, 418. 

 Mnium, 318. 

 Molds, 132, 246-256. 

 Molds, conjugating, 248. 

 Monilia, 267. 

 Monocotyledons, 51-56, 158-166, 



207, 392-402. 



Monoecious, 237, 253, 376. 

 Monotropa uniflora, 86, 103, 130. 

 Moraceae, 405. 

 Morchella, 268, 269. 

 Morels, 268, 269. 



Morphology, 206; comparative, 206. 

 Mosses, 316-326. 

 Mother cell, 224, 320, 325, 342, 356, 



374, 39 ! 

 Mountain laurel, 415; pollination of, 



176, 177- 



Mucor mucedo, 252, 253. 

 Mucor stolonifer, 250. 

 Mucorales, 253. 

 Mucorineae, 253. 

 Mulberry family, 405. 

 Musa paradisiaca, 402. 

 Musa textilis, 402, 405. 

 Muscarine, 296. 

 Muscineae, 210, 316-326. 

 Mushrooms, 291-296. 

 Mushrooms, cultivated, 291, 293; 



poisonous, 291, 295, 296. 

 Muskmelons, 419. 



Mutation, 461-463. 

 Mycelium, 129, 132, 247, 250-294. 

 Mycorhiza, 124-127, 130, 347. 

 Mycorhizae, ectotropic, 1 24. 

 Mycorhizae, endotropic, 124. 

 Myrsiphyllum, 46. 



Natural selection, 459. 

 Naval orange tree, 411. 

 Nectar, 172; nectaries, 172; nectar 



glands, 172. 

 Needle leaves, 88. 

 Nemalion, 239, 240, 242. 

 Nettle family, 404. 

 Neuter flowers, 156. 

 Nicotiana tabacum, 417. 

 Nitella, 228. 

 Nightshade family, 416. 

 Nitrate bacteria, 103, 120. 

 Nitrates, 103, 107, 118, 120. 

 Nitrification, 119-126. 

 Nitrite bacteria, 103, 120. 

 Nitrites, 103. 

 Nitrobacter, 120. 

 Nitrogen, 15, 100, in, 119-123. 

 Nitrogen, fixation of, 120-123. 

 Nitromonas, 120. 

 Nostoc, 233, 245, 273, 274. 

 Nucellus, 5. 

 Nucleolus, 213. 

 Nucleus, 213, 214, 215, 231. 

 Nutmeg melons, 419. 

 Nutrition of plants, 117-139. 

 Nuts, 190, 404. 



Oak, buds and shoots of, 67. 



Oak stem, structure of, 53, 60. 



Oat flowers, 162, 163. 



Oat smut, 277. 



Oats, 395. 



CEdogonium, 223, 224, 229, 230. 



(Enothera biennis, 145. 



(Enothera laevifolia, 462. 



(Enothera lamarkiana, 148, 461, 462. 



(Enothera nanella, 462. 



Oil, 18. 



Olea europaea, 416. 



Oleaceae, 416. 



Olive family, 416. 



Olive tree, 416. 



Onagra biennis, 145. 



Onion bulb, 43. 



Onoclea sensibilis, 329, 339. 



Onoclea struthiopteris, 340. 



