Nothocestrum longifolium, the longleaf ʻaiea, is a species of tree in the nightshade family, Solanaceae, that is endemic to Hawaiʻi. It can be found in mesic and wet forests at elevations of 360–1,620 metres (1,180–5,310 ft) on the islands of Maui, Molokaʻi, Lānaʻi, Oʻahu, Kauaʻi. It is threatened by habitat loss.