Colubrina oppositifolia

Colubrina oppositifolia, known as Kauila in Hawaiian, is a species of flowering tree in the buckthorn family, Rhamnaceae, that is endemic to Hawaii. It can be found in dry, coastal mesic, and mixed mesic forests at elevations of 240–920 m (790–3,020 ft) on the islands of Oʻahu (Waiʻanae Range) and Hawaiʻi (slopes of Kohala, Hualālai, and Mauna Loa). There is also one individual remaining on Maui. Associated plants include alaheʻe (Psydrax odorata) and ʻohe kukuluāeʻo (Reynoldsia sandwicensis).