542 



INDEX 



Jerusalem Artichoke, 119 

 Jungermannia, 363, 367 

 Junipcrus, 230 



Lacunar tissue, 264 



Lamellae, of leaf of Moss, 341 ; of 



Mushroom, 256 

 Lamina, 124, &c. 

 Laminaria, 406 

 Lateral buds (Equisctum\ 336 

 Lateral roots, 149 ; origin of, 151 ; 



of Maize, 183 ; of Pine, 248 

 Latex, reactions of, 118 

 Laticiferous cells 120 ; vessels, 118 

 Leaf-scar, 143 

 Leaf-sheath, Maize, 172 ; of Equi~ 



setum, 325, 336 



Leaf-trace, 57-61 ; of Fern, 290 

 Leaves, origin of, 79 ; of Dicotyle- 

 dons, 122 ; bifacial type of, 122 ; 

 isobilateral type of, 134 ; centric 

 type of, 136 ; aquatic type of, 

 138 ; of Monocotyledons, bifacial 

 type, 172 ; isobilateral type, 179 ; 

 aquatic type, 180 ; of Selaginclla, 

 268 ; of Lycopodium, 282 ; of 

 Fern, 307 ; of Pilularia, 321 ; of 

 Moss, 345 ; of Characese, 410 ; 

 fall of leaf, 143 

 Lemanea, 386, 389 

 Leuticels, 93 

 Leontodon, see Dandelion 

 Lepidium, 491 

 Leukoplasts, 220 

 Lichens, 473, &c. 

 Lignified walls, reactions of, 38 

 Ligule, 172, 262 

 Lilac, apex of, 83 

 Lilium, 176 



Lime, sieve tubes of, 116 

 Limiting layer of Fucus, 395 

 Linseed, 94 

 Linum, 94 

 Lunularia, 361 

 Lupinus luteus, 228 

 Lychnis, flower of, 189 

 Lycopcrdon, 461 

 Lycopodinae, 261 

 Lycopodium, 275, &c. 

 Lysigenetic cavities, 331 



Macrosporangia, 205, 255, 271, 326 



Macrospores, 205, 271, 323 



Macrozoospores, 426 



Mahonia, 464 



Maize, see Zea 



Male branches, Marchantia, 361, 

 369 



Male inflorescence, Pine, 252 



Male Shield Fern, 287; see Aspi- 

 dium 



Manubrium, 415 

 Marchantia, 360, &c. 



Mares-tail, see Hippuris 

 Marsh Marigold, 188 

 Marsilea, 320 ; sporocarp of, 324 

 Measurement of objects, 22 

 Mechanical strengthening, 140 

 Medulla, see Pith 

 Medullary rays, Elm, 89, 98, 102, 

 105 ; of Pine, 236, 241, 242, 244 

 Medullary sheath, 89 

 Megalospora, 478 

 Meristem, 80, &c. 

 Mesocarpus, 468 



Mesophyll, 127 ; Maize, 174 ; Pine, 

 245 ; Lycopodium, 282 ; Fern, 308 

 Metzgeria, 367 

 Micrasterias, 448 

 Micrometer, 22 

 Micropyle, 205, 215, 255 

 Microscope, adjustment of, 16 

 Microsporangia, 200, 253, 271, 323 

 Microspores, 200, 253, 271, 323 

 Microtome, 9 

 Microzoospores, 426 

 Middle lamella, 38 

 Midrib, 124 

 Mirabilis, fruit of, 217 

 Monocotyledons, vegetative organs 



of, 161-186 

 Morchella, 471 

 Moss-plant, 341, &c. 

 Mother-cells, of antherozoids or 

 spermatozoids, 314, 347, 370 ; of 

 pollen, 203 ; of spores, 311, &c. 

 Mounting objects, 12 

 Mucilage-cells, Elm, 93 

 Mucilaginous walls, reactions of, 94 

 Mucor, 497 

 Mucorinese, 497 

 Multiple epidermis, 139 



