Géneros de organismos asociados: Kadsura [1 taxon], Kadua [7 taxones], Kaempferia [5 taxones], Kageneckia [3 taxones], Kalanchoe [32 taxones], Kalimeris [1 taxon], Kallstroemia [2 taxones], Kalmia [3 taxones], Kalmusia [2 taxones], Kalopanax [2 taxones], Kalotermes [1 taxon], Kandelia [1 taxon], Karelinia [1 taxon], Karlingia [4 taxones], Karschia [1 taxon], Karsteniomyces [2 taxones], Kaschgaria [1 taxon], Kedrostis [2 taxones], Keetia [1 taxon], Keissleriella [2 taxones], Kellymyia [1 taxon], Kendrickomyces [1 taxon], Kentia [5 taxones], Kentranthus [1 taxon], Keratosphaera [1 taxon], Kernia [2 taxones], Kerria [18 taxones], Kerria [1 taxon], Khaya [42 taxones], Khuskia [20 taxones], Kibara [4 taxones], Kickxia [2 taxones], Kielmeyera [8 taxones], Kigelia [17 taxones], Kiggelaria [24 taxones], Kilifia [5 taxones], Kilikiostroma [7 taxones], Kionochaeta [7 taxones], Kirganelia [10 taxones], Kirschsteiniothelia [5 taxones], Kitaibelia [2 taxones], Kleinia [3 taxones], Kmetiopsis [20 taxones], Knautia [88 taxones], Kneiffia [1 taxon], Knema [8 taxones], Knightia [5 taxones], Kniphofia [9 taxones], Knowltonia [6 taxones], Knoxia [1 taxon], Kobresia [31 taxones], Kochia [81 taxones], Koeleria [37 taxones], Koelpinia [1 taxon], Koelreuteria [65 taxones], Koleroga [2 taxones], Kolkwitzia [2 taxones], Koompassia [77 taxones], Koorchaloma [1 taxon], Kopsia [2 taxones], Kordyana [2 taxones], Korthalsia [8 taxones], Kosteletzkya [1 taxon], Kotochalia [17 taxones], Kotschya [2 taxones], Krascheninnikovia [2 taxones], Kraussia [33 taxones], Kretzschmaria [15 taxones], Kretzschmariella [4 taxones], Kriegeriella [1 taxon], Krombholzia [1 taxon], Krugiodendron [15 taxones], Kuehneola [2 taxones], Kummerowia [2 taxones], Kunda [1 taxon], Kundmannia [2 taxones], Kuzuhaea [1 taxon], Kydia [15 taxones], Kyllinga [25 taxones]