 Luzula species (Wood Rush) |
 Lycopus virginicus (Virginia Water-Horehound) |
 Lyonia ligustrina (Maleberry) |
 Lysimachia ciliata (Fringed Loosestrife) |
 Lysimachia lanceolata (Lance-Leaved Loosestrife) |
 Lysimachia quadriflora (Prairie Loosestrife) |
 Lysimachia quadrifolia (Whorled Loosestrife) |
 Lysimachia terrestris (Yellow Loosestrife) |
 Lysimachia thyrsiflora (Tufted Loosestrife) |
 Lythrum alatum (Winged Loosestrife) |
 Magnolia acuminata (Cucumber Magnolia) |
 Magnolia tripetala (Umbrella Magnolia) |
 Maianthemum canadense (Canada Mayflower) |
 Maianthemum racemosum (Common False Solomon's-Seal) |
 Maianthemum stellatum (Starry False Solomon's-Seal) |
 Malaxis unifolia (Green Adder’s-Mouth) |
 Malus coronaria (Sweet Crabapple) |
 Marshallia grandiflora (Barbara's Buttons) |
 Medeola virginiana (Indian Cucumber-Root) |
 Meehania cordata (Heart-Leaved Meehania) |
 Melampyrum lineare (Cow-Wheat) |
 Menispermum canadense (Canada Moonseed) |
 Mentha arvensis (Wild Mint) |
 Menyanthes trifoliata (Buckbean) |
 Mertensia virginica (Virginia Bluebells) - Blue Flowers |
 Mertensia virginica (Virginia Bluebells) - Flower Buds |
 Mertensia virginica (Virginia Bluebells) - Pale Flowers |
 Mertensia virginica (Virginia Bluebells) - Pink Flowers |
 Mertensia virginica (Virginia Bluebells) - White Flowers |
 Micranthes micranthidifolia (Lettuce-Leaved Saxifrage) |
 Micranthes pensylvanica (Swamp Saxifrage) |
 Micranthes pensylvanica (Swamp Saxifrage) - Greenish Flowers |
 Micranthes virginiensis (Early Saxifrage) |
 Mikania scandens (Climbing Hempweed) |
 Milium effusum (Wood Millet) |
 Mimulus alatus (Winged Monkey-Flower) |
 Mimulus ringens (Square-Stemmed Monkey-Flower) |
 Minuartia michauxii (Rock Sandwort) |
 Mirabilis nyctaginea (Wild Four-O'clock) |
 Mitchella repens (Partridgeberry) |
 Mitella diphylla (Two-Leaved Miterwort) |
 Mitella nuda (Naked Miterwort) |
 Moehringia lateriflora (Grove Sandwort) |
 Mollugo verticillata (Green Carpetweed) |
 Monarda citriodora (Lemon Bergamot) |
 Monarda clinopodia (Pale Bergamot) |
 Monarda didyma (Bee-Balm) |
 Monarda fistulosa (Wild Bergamot) |
 Monarda punctata (Horsemint) |
 Monotropa uniflora (Indian Pipes) |