Euphorbia haeleeleana Euphorbia haeleeleana Euphorbia haeleeleana, the Kauai spurge, is a species of flowering plant in the croton family, Euphorbiaceae, that is endemic to the islands of Kauai and Oahu in Hawaii. Like other Hawaiian spurges it is known as `akoko. It inhabits dry, coastal mesic, and mixed mesic forests from . Associated plants include ōhia lehua ("Metrosideros polymorpha"), koa ("Acacia koa"), lama ("Diospyros sandwicensis"), kukui ("Aleurites moluccanus"), aalii ("Dodonaea viscosa"), wiliwili ("Erythrina sandwicensis"), hala pepe ("Pleomele" spp.), ohe kukuluāeo ("Reynoldsia sandwicensis"), and āulu ("Sapindus oahuensis"). Kauai Spurge is a small tree, reaching a height of . It is threatened by habitat
Metrosideros polymorpha the most common native tree in the Hawaiian Islands, tolerating a wide range of soil conditions, temperature, and rainfall. It grows from sea level right up to the tree line at elevations of and is commonly found in moist and dry forests, high shrublands, and is a colonizer of recent lava flows. It is relatively slow growing. Dominant in cloud forests above , the tree is also common in seasonally wet forests, where it may be dominant or form mixtures with the native "Acacia koa". "Metrosideros polymorpha" may occur as a tall tree or a prostrate shrub, and everything in