Macartney Rose          

Macleaya          

Maclura          

Madwort          

Magnolia          

Mahaleb Cherry          

Maiden Fern          

Maidenhair Fern          

Maidenhair Spleenwort          

Maidenhair Tree          

Maidenstears          

Malabar Sprangletop          

Maleberry      

Mallow          

Man Of The Earth          

Mannagrass          

Manyflower Flatsedge      

Manyfruit Primrose-willow          

Manyspike Flatsedge      

Maple          

Mapleleaf Goosefoot          

Mapleleaf Viburnum      

Marbleseed          

Marginal Woodfern          

Marigold          

Marijuana          

Maroon Carolina Milkvine          

Marsh Bellflower      

Marsh Blue Violet          

Marsh Bristlegrass          

Marsh Cudweed          

Marsh Elder          

Marsh Flatsedge      

Marsh Marigold          

Marsh Mermaidweed          

Marsh Pea          

Marsh Seedbox      

Marsh Skullcap          

Marsh St. Johnswort          

Marshmallow          

Marshpepper Knotweed      

Marvel Of Peru          

Maryland Goldenaster          

Maryland Hawkweed