INDEX 



343 



Marsilia, 158. 



Megasporangium, 152, 177, 179. 

 Megaspore, 152, 165, 167, 179, 201, 



203. 

 Megasporophyll, 152, 165, 177, 199. 

 Melissa, 275. 

 Mentha, 229, 274. 

 Meristem, 281. 



Mesophyll, 141, I42, 191, 295. 

 Mesophytes, 324. 

 Mestome, 282. 



Micropyle, 17S, 201, 202, 206. 

 Microspira, 76. 

 Microspha^ra, 58. 



Microsporangium, 152, 176, 197. ■ 

 Microspore, 152, 165, 166, 179, 197, 



201. 

 Microsporophyll, 152, 165, 174, 196, 



198. 

 Midrib, 234. 

 Mildews, 57. 

 Mimosa, 265, 308, 309. 

 Mint : see Mentha. 

 Mint family : see Labiatfe. 

 Monocotyledons, 208, 232, 236, 289. 

 Monoecious, 115. 

 Monopodial, 35. 

 Monotropa, 270. 

 Moonwort: see Botrychium. 

 Morels, 60, 62. 



Morning-glory : see Ipomosa. 

 Morphology, 297. 

 Mosses, 93, 119, 124. 

 Mother cell, 9. 

 Mougeotia, 31. 

 Movement, 303. 

 Mucor, 49, 52, 53, 54, 55. 

 Mullein : see Verbascum. 

 Musci, 119. 

 Mushrooms, 68. 



IVfustard family : see Crucifera^. 

 Mycelium, 49. 



Mycomycetes, 50. 

 Mycorrhiza, 87, 88. 

 Myristica, 214. 

 Myrmecophytes, 90, 91. 

 Myxomycetes, 74, 75. 



N 

 Naias, 237. 

 Narcissus, 247. 

 Nemalion, 4S. 

 Xepeta, 275. 

 Nicotiana, 227, 275. 

 Nightshade family : see Solanaceae. 

 Nostoc, 18. 



Nucellus, 178, 179, 201, 202, 203. 

 Nucleus, 7. 

 Nutation, 304. 

 Nutmeg, 214. 

 Nutrition, 3, 299. 

 Nyctitropic movement, 309. 

 Nymphaeaceee, 261. 



Oak, 255, 256. 



(Edogonium : see Edogonium. 



Onoclea, 145, 147, I48. 



Oogonium, 16. 



Oosphere, 16. 



Oospore, 16, 101. 



Open bundle, 287. 



Operculum, 122, 125. 



Ophioglossum, 145, 149. 



Orchidacea?, 249. 



Orchids, 249, 252, 253, 254. 



(Orchid family: see Orchidaceap. 



Origanum, 274. 



Ornithogalum, 247. 



Oscillatoria, 19. 



Osmunda, 145, 156. 



Ostrich fern : see Onoclea. 



Ovary, 199, 200, 202. 



Ovule, 178, 179, 201, 203. 



