Macartney Rose
Macleaya
Maclura
Macrothelypteris
Madagascar Dropseed
Madwort
Magnolia
Mahaleb Cherry
Maiden Fern
Maiden Pink
Maidenbush
Maidenhair Fern
Maidenhair Spleenwort
Maidenstears
Malabar Sprangletop
Malaysian False Pimpernel
Maleberry
Mallow
Man Of The Earth
Mannagrass
Manyflower Flatsedge
Manyflower Marshpennywort
Manyflowered Monkeyflower
Manyfruit Primrose-willow
Manyray Aster
Manyspike Flatsedge
Maple
Mapleleaf Goosefoot
Mapleleaf Oak
Mapleleaf Viburnum
Marbleseed
Marginal Woodfern
Marigold
Marijuana
Maroon Carolina Milkvine
Marsh Blue Violet
Marsh Bristlegrass
Marsh Elder
Marsh Flatsedge
Marsh Mermaidweed
Marsh Parsley
Marsh Seedbox
Marsh St. Johnswort
Marshmallow