Melicope knudsenii, commonly known as Olokele Valley melicope or Knudsen's melicope, is a species of flowering plant in the citrus family, Rutaceae, that is endemic to Hawaii. It inhabits montane mesic forests dominated by Acacia koa, Metrosideros polymorpha, and Dicranopteris linearis on KauaŹ»i (Olokele Valley and Waimea Canyon) and East Maui (Auwahi). Associated plants include Syzygium sandwicensis, Cheirodendron trigynum, Myrsine lessertiana, Ilex anomala, Alphitonia ponderosa, Zanthoxylum dipetalum, Kadua terminalis, Pleomele aurea,Bobea spp., Tetraplasandra waimeae, Xylosma hawaiiense, Eurya sandwicensis, Psychotria mariniana, Melicope anisata, Melicope barbigera, Pouteria sandwicensis, Dodonaea viscosa, andDianella sandwicensis. It is threatened by habitat loss. Like other Hawaiian M