Géneros de organismos asociados: Wagatea [5 taxones], Wahlenbergia [3 taxones], Waldsteinia [2 taxones], Wallenia [85 taxones], Wallrothiella [9 taxones], Walsura [1 taxon], Waltheria [16 taxones], Wardina [38 taxones], Warnstorfia [3 taxones], Warszewiczia [8 taxones], Wasabia [1 taxon], Washingtonia [6 taxones], Watsonia [16 taxones], Wattakaka [1 taxon], Webera [7 taxones], Weddellomyces [10 taxones], Wedelia [120 taxones], Weigela [7 taxones], Weinmannia [21 taxones], Weissia [62 taxones], Welwitschia [19 taxones], Wenderothia [2 taxones], Wendlandia [10 taxones], Wentiomyces [3 taxones], Wettsteinina [2 taxones], Wiborgia [4 taxones], Widdringtonia [17 taxones], Wiesneriomyces [9 taxones], Wikstroemia [18 taxones], Willoughbya [1 taxon], Winterella [1 taxon], Wissadula [35 taxones], Wistaria [2 taxones], Wisteria [38 taxones], Withania [64 taxones], Wojnowicia [2 taxones], Woodfordia [27 taxones], Woodwardia [1 taxon], Wormia [1 taxon], Woronina [8 taxones], Woronovia [2 taxones], Wrightia [27 taxones], Wulffia [25 taxones]