224 



INDEX 



Lily-of-the-valley, Figs. 107, 109, 



pp. 174, 179 

 Linden, Figs., 100, 102, 134, pp. 



165, 167, 212 

 Linear outline of leaves, 159 



Fig. 96, p. 161 

 Liriodendron tulipifera, Fig. 95, p. 



160 

 Liverworts, 56 



fertilization, 60 



gametophyte, 60 



habitat, 56 



morphology, 56 



reproduction, 56 



sparophyte, 62 



summary, 60 

 Liviodendron tulipifera, Fig. 95, p. 



160 



Lobed margin of leaves, 158 

 Lobelia inflata, 119 



Figs. 70, 79, pp. 120, 138 

 Loculicidal capsule, 205 



Fig. 132, p. 205 

 Locust, black, Figs. 89, 98, 97, 130, 



pp. 152, 160, 162, 202 

 Loment, 200 



Fig. 129, p. 201 

 Louse wort, Fig. 94, p. 158 

 Lupine, Figs. 96, 97, pp. 161, 162 

 Lupinus perennis, Figs. 95, 97, pp. 



161, 162 

 Lycoperdon gemmatum, Fig. 22, 



p. 54 

 Lycopersicon lycopersicum, Fig. 



124, p. 195 

 Lycopodiales, 92 

 Lycopodium, Fig. 53, p. 94 



lucidulum, Fig. 52, p. 93 



M 



MACROSPORANGIUM, 100 

 Macrospore, 113, 184 

 Mallow, low, Fig. 129, p. 201 

 Malus malus, Fig. 126, p. 198 

 Malva rotundifolia, Fig. 129, p. 201 

 Mandrake, Figs. 75, 76, 90, pp. 134, 



135, 153 

 Maple, Fig. 129, p. 201 



red, Figs. 93, 98, pp. 157, 163 

 Marsh shield fern, Fig. 39, p. 75 

 Marchantia, 56 



Marchantia polymorpha, Figs. 25, 

 27, 28, pp. 58, 59, 61 



thallus, Figs. 24, 26, pp. 57, 58 

 Margin of leaf, 152 

 Fig. 93, p. 157 



Marsh mallow, Fig. 112, p. 182 

 Masses of cells, 30 

 Mechanically distributed seeds, 



211 



Fig. 134, p. 212 



Medicago sativa, Fig. 130, p. 202 

 Megaspore, 100 



Meibomia canadensis, Fig. 96, p. 

 161 



sp., Fig. 129, p. 201 

 j Melilotus officinalis, Fig. 97, p. 162 

 Membranous blade of leaf, 171 

 Mesocarp, 192 

 Micropyle, 100, 113, 184 

 Micropyle-scar, 207 

 I Microspore, 101 

 Microsporophylls, 101 

 Milk, pasteurization of, 40 

 Milkweed, common, P'igs. 96, 108, 

 130, 134, pp. 161,175,202,212 



swamp, Fig. 134, p. 212 

 Mitchella repens, Figs. 79, 101, pp. 



138, 166 

 Mixed-buds, 146 



Fig. 86, p. 148 

 Moccosin flower, Figs. 115, 121, pp. 



186, 191 

 Monadelphous stamens, 182 



Fig. 112, p. 182 

 Monsecious flowers, Fig. 118, p. 187 



plants, 186 



Monandrous flower, 182 

 Monocarpellary gyncecium, 183 

 Monocotyledese, Fig. 69, p. 115 

 Monocotyledons, 21 



gametophyte, 117 



sporophyte, 118 



summary of, 117 

 Monocotyledenous angiosperms, 



109 



Morel, Fig. 23, p. 55 

 Morschella esculenta, Fig. 23, p. 55 

 Morus rubra, Fig. 128, p. 200 

 Mosses, 21, 63 



fertilization, 64 



Fig. 30, p. 64 



gametophyte, 70 



habitat, 63 



morphology of gametophyte, 63 



