Macleaya
Maclura
Madwort
Mahaleb Cherry
Maiden Blue Eyed Mary
Maiden Fern
Maiden Pink
Maidenhair Fern
Maidenhair Spleenwort
Maidenstears
Malabar Sprangletop
Male Fern
Mallow
Maltesecross
Mammoth Wildrye
Man Of The Earth
Manchurian Honeysuckle
Mannagrass
Manybranched Pepperweed
Manyflower Marshpennywort
Manyfruit Primrose-willow
Manyhead Sedge
Manzanita
Maple
Mapleleaf Goosefoot
Mapleleaf Viburnum
Marbleseed
Marginal Woodfern
Marigold
Marijuana
Marsh Arrowgrass
Marsh Bellflower
Marsh Blue Violet
Marsh Cudweed
Marsh Elder
Marsh Fleabane
Marsh Grass Of Parnassus
Marsh Hedgenettle
Marsh Horsetail
Marsh Marigold
Marsh Mermaidweed
Marsh Muhly
Marsh Pea
Marsh Seedbox