Macartney Rose          

Macfadyena          

Macleaya          

Maclura          

Macridea          

Macrothelypteris          

Madagascar Periwinkle          

Madam Gorgon          

Magnolia          

Maid Marian          

Maid Of The Mist          

Maiden Fern          

Maidencane          

Maidenhair Fern          

Maidenhair Spleenwort          

Maidenstears          

Malabar Sprangletop          

Malaysian False Pimpernel          

Maleberry      

Mallow          

Maltese Star-thistle          

Man Of The Earth          

Manatee Dewberry          

Mangrove          

Mannagrass          

Manyflower Flatsedge      

Manyflower Grasspink          

Manyflower Marshpennywort          

Manyhead Rush          

Manyseed          

Manyspike Flatsedge      

Maple          

Mapleleaf Goosefoot          

Mapleleaf Viburnum      

Maraca Amarilla          

Marbleseed          

Marginal Woodfern          

Marigold          

Marijuana          

Maroon Carolina Milkvine          

Marsh American-aster          

Marsh Bellflower      

Marsh Blue Violet          

Marsh Bristlegrass