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
Acacia koa there are few koa remaining which are both large and straight enough to do so today. In areas where cattle are present, koa regeneration is almost completely suppressed. However, if the cattle are removed, koa are among the few native Hawaiian plants able to germinate in grassland, and can be instrumental in restoring native forest. It is often possible to begin reforestation in a pasture by disk harrowing the soil, as this scarifies seeds in the soil and encourages large numbers of koa to germinate. Experiments at the Hakalau Forest National Wildlife Refuge have shown that ōhia lehua ("Metrosideros polymorpha")