1. In accord with naturism

See also: naturism

• genus Wintera
• genus Wisteria
• genus Wolffia
• genus Wolffiella
• genus Woodsia
• genus Woodwardia
• genus Wyethia
• genus Wynnea
• genus Xanthium
• genus Xanthomonas
• genus Xanthorroea
• genus Xanthosoma
• genus Xenicus
• genus Xenopus
• genus Xenorhyncus
• genus Xenosaurus
• genus Xeranthemum
• genus Xerobates
• genus Xerophyllum
• genus Xiphias
• genus Xylaria
• genus Xylocopa
• genus Xylomelum
• genus Xylopia
• genus Xylosma