Géneros de organismos asociados: Jacaranda [35 taxones], Jacquemontia [69 taxones], Jacquinia [36 taxones], Jacquiniella [1 taxon], Jaegeria [2 taxones], Jaltomata [3 taxones], Jambosa [291 taxones], Jania [1 taxon], Janipha [1 taxon], Jaracatia [8 taxones], Jasione [1 taxon], Jasminum [461 taxones], Jatropha [144 taxones], Jaundea [1 taxon], Johansonia [33 taxones], Jovibarba [1 taxon], Juania [1 taxon], Jubaea [12 taxones], Jucca [1 taxon], Juglans [859 taxones], Julella [1 taxon], Juncus [223 taxones], Jungermannia [3 taxones], Junghuhnia [3 taxones], Jungia [1 taxon], Juniperus [1264 taxones], Juno [1 taxon], Jurinea [35 taxones], Jussiaea [15 taxones], Jussieua [2 taxones], Justicia [127 taxones]