Walking Fern
Wall Hawkweed
Wall-lettuce
Wallflower
Wallrocket
Wallrue
Walnut
Wand Dewberry
Warminster Broom
Warty Panicgrass
Wartycabbage
Washington Hawthorn
Water Arum
Water Chestnut
Water Foxtail
Water Hemlock
Water Horsetail
Water Knotweed
Water Mannagrass
Water Mint
Water Plantain
Water Pygmyweed
Water Sedge
Water Smartweed
Water Spangles
Water Speedwell
Water-starwort
Waterbuttons
Waterclover
Watercress
Waterhorehound
Waterleaf
Waterlily
Watermeal
Watermelon
Watermelon Nightshade
Watermilfoil
Watermoss
Waternymph
Waterparsnip
Waterplantain Spearwort
Watershield
Waterweed
Waterwort