Melothria
Memorial Rose
Mercury Spurge
Mermaidweed
Mexican Alvaradoa
Mexican Clover
Mexican Fireplant
Mexican Flamevine
Mexican Lovegrass
Mexican Pricklypoppy
Mexican Primrose-willow
Mexican Senna
Mexican Sprangletop
Mexican Stonecrop
Mexican Tea
Mexican Teosinte
Mexican Vanilla
Mexican Viper
Mexican-blue
Miami Blue-eyed Grass
Miccosukee Gooseberry
Midsorus Fern
Mile A Minute Vine
Mile-a-minute
Milkbark
Milkberry
Milkpea
Milktree
Milkvetch
Milkvine
Milkweed
Milkwood
Millet Beaksedge
Mimusops
Mingled Beaksedge
Miniature Flatsedge
Mint
Misopates
Mission Grass
Missouri Gourd
Missouri Ironweed
Missouri Lambsquarters
Missouri River Willow
Mistletoe
