Maclura
Madwort
Maiden Fern
Maidenhair Fern
Maidenstears
Malabar Sprangletop
Mallow
Man Of The Earth
Mannagrass
Manyfruit Primrose-willow
Manyhead Sedge
Manyseed Goosefoot
Manzanita
Maple
Mapleleaf Goosefoot
Marbleseed
Marginal Woodfern
Marijuana
Marsh Arrowgrass
Marsh Bellflower
Marsh Blue Violet
Marsh Bristlegrass
Marsh Elder
Marsh Fleabane
Marsh Marigold
Marsh Mermaidweed
Marsh Muhly
Marsh Pea
Marsh Seedbox
Marsh Skullcap
Marsh St. Johnswort
Marshpepper Knotweed
Maryland Sanicle
Maryland Senna
Mat Amaranth
Mat Sandbur
Mat Vetch
Matricary Grapefern
Matrimony Vine
Matted Sandmat
Matted Spikerush
Maximilian Sunflower
Mayapple
Mayflower