Macleaya cordata, 42.
Madwort, rock, or golden tuft, 7.
Margyricarpus setosus, 171.
Marigold, double marsh, 47.
Marjoram, beautiful, 191.
Mazus, dwarf, 173.
pumilio, 173.
"Meadow bootes," 47.
Meadowsweet, 279.
Meadows, Queen of the, 279.
Megasea ciliata, 242, 249.
cordifolia, 245.
ligulata, 249.
purpurascens, 261.
Melittis grandiflorum, 174.
melissophyllum, 174.
Merendera caucasicum, 45.
Mertensia, 224.
Mezereon, 79.
Milfoil, common, 4.
Milla uniflora, 292.
Mitella, 288.
Monarda affinis, 176.
altissima, 176.
didyma, 175.
fistulosa, 176.
kalmiana, 175.
media, 176.
oblongata, 176.
purpurea, 176.
rugosa, 176.
Russelliana, 176.
Monk's-hood, autumn, 5.
Morina elegans, 176.
longifolia, 176.
Moss, silver, 238.
Muhlenbeckia complexa, 178.
Mullien, 228.
Muscari botryoides, 179.
b. alba, 180.
racemosum, 180.