Index 



355 



Lemna, 195 

 Lepidocarpon, no, 131 

 Lepidodendron, 131, 139 

 Lichens, 78, 208, 213, 217, 218, 



262 



Life, origin of, 3, 6, 186 

 Light, effects of, 33, 34, 203, 



205, 206, 208, 209 

 Lily family, 249, 254 

 Lily-pf-the-valley, 166 

 Liquidambar, 261 

 Liriodendron, 242, 249 

 Live-oak, 274 

 Liverworts, 79, 85, 86, 89, 



121, 218, 239 

 Lobelia, 171 



Loblolly bay (Gordonia), 262 

 Locust, 269 

 Loganberry, 340 

 Lombardy poplar, 320 

 Lupin, 275, 276 

 Lycopods, Lycopodinese (see 



also "Club moss"), 140 

 Lycopodium, 104, *IO5, 114, 



*I27 



Lysichiton, 274 



Macrocystis, 59, 60 



Macrosporangium, 125, 136 



Macrospore, 107 



Madrono (Arbutus), 274 



Magnolia, 155, 161, 162, 163, 

 172, 227, 229, 242, 249, 251, 

 256, 257, 269 



Mahogany, 269 



Maiden-hair tree (see " Gink- 

 go") 



Maize, 285, 286 



Mandrake (Podophyllum), 

 251, 257 



Mango, 206, 283, 288 



Mangosteen, 283 



Mangrove, 169, 196 



Manila hemp, 281 



Manzanita (Arctostaphylos), 

 207, 210, 274 



Maple, 242, 244, 246, 268, 274, 

 292 



Marattiaceae, 134, 239 



Marine plants, 70 



Mariposa lily (Calochortus), 

 202, 275 



Marsilia, 107 



Marsiliaceae, 131 



Mayflower (Epigaea) (see 

 'Trailing Arbutus") 



Mechanical tissues, 89 



Megaceros, *gS 



Megaspore (see " Macro- 

 spore ") 



Memory, a factor in heredity, 

 27, 326 



Mendel's law of inheritance, 

 327 



Mesembryanthemum, 203 



Mesophyte, 195, 197 



Mesozoic, flora of, 135, 136, 

 140, 145, 149, 182, 240 



Mesquit, 244 



Metazoa, 329, 330, 333 



Micellae, 7 



Microsporangium, 125, 152 



Microspore, 107 



Milkweed (Asclepias), 2=51 



Millet, 281 



Mint family, 228 



Mnemic theory of inheri- 

 tance, 326 



Monoclea, 239 



Monocotyledons, 150, 152, 

 156, 159, 161, 162, 163, 164, 

 165, 173, 184, 309 



Monosporangiate flowers, 162 



Monterey cypress, 142 



Monterey pine, 142 



Morus (see "Mulberry") 



Mosses, 87, go, 120, 121, 194, 

 208, 251 



Movements of plants, 28, 29 



Mulberry, 83, *I74 



Multicellular plants, 30, 55 



Mushroom, 75, 76 



Mustard, 37, 159, 275 



Mutation, Mutation theory, 

 23, 306, 308, 319, 321, 322, 

 323 



