INDEX 



Marsilia, 158. 



Megasporangium, 152, 177, 179. 

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



203. 



Megasporophyll, 152, 165, 177, 199. 

 Melissa, 275. 

 Mentha, 229, 274. 

 Meristera, 281. 



Mesophyll, 141, 142, 191, 295. 

 Mesophytes, 324. 

 Mestome, 282. 



Micropyle, 178, 201, 202, 206. 

 Microspira, 76. 

 Microsphaera, 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 Labiatae. 

 Monocotyledons, 208, 232, 236, 289. 

 Monoecious, 115. 

 Monopodial, 35. 

 Monotropa, 270. 

 Moon wort : see Botrychium. 

 Morels, 60, 62. 



Morning-glory : see Ipomcea. 

 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. 



Mustard family : see Cruciferae. 

 Mycelium, 49. 



343 



Mycorrhi^a, 87, 



Myristira, ..'/;. 

 Myrmcn.pliytrs 1)0, 01. 

 Myxomycetes, 71 



N 



Naias, 237. 

 Narcissus, 247. 

 Nemalion, 43. 

 Nepeta, 275. 

 Nicotiana, 227, 275. 

 Nightshade family : see Solanacese. 

 Nostoc, 18. 



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

 Nucleus, 7. 

 Nutation, 304. 

 Nutmeg, 214. 

 Nutrition, 3, 299. 

 Nyctitropic movement, 309. 

 Nymphaeacea3, 261. 



Oak, 255, 256. 



CEdogonium : see Edogonium. 



Onoclea, 145, 147, 148. 



Oogonium, 16. 



Oosphere, 16. 



Oospore, 16, 101. 



Open bundle, 287. 



Operculum, 122, 125. 



Ophioglossum, 145, 149. 



Orchidaceaa, 249. 



Orchids, 249, 252. 253, 254. 



Orchid family : see Orchidaceae. 



Origanum, 274. 



Ornithogalum, 247. 



Oscillatoria, 19. 



Osraunda, 145, 156. 



Ostrich fern : see Onoclea. 



Ovary, 199, 200, 202. 



Ovule, 178, 179, 201, 203. 



