Macleaya
Maclura
Madwort
Magnolia
Mahaleb Cherry
Maiden Fern
Maiden Pink
Maidenhair Fern
Maidenhair Spleenwort
Maidenstears
Malabar Sprangletop
Maleberry
Mallow
Man Of The Earth
Manchurian Honeysuckle
Mannagrass
Mansfield Hawthorn
Manybranched Pepperweed
Manyflower Flatsedge
Manyflower Marshpennywort
Manyflower Sunflower
Manyfruit Primrose-willow
Manyseed Goosefoot
Manzanita
Maple
Mapleleaf Goosefoot
Mapleleaf Viburnum
Marbleseed
Marginal Woodfern
Marigold
Marijuana
Marsh Arrowgrass
Marsh Bellflower
Marsh Blue Violet
Marsh Bristlegrass
Marsh Cudweed
Marsh Elder
Marsh Hedgenettle
Marsh Marigold
Marsh Mermaidweed
Marsh Pea
Marsh Seedbox
Marsh Skullcap
Marsh St. Johnswort