Acacia koa (Koa tree)

Front view illustration of a Koa tree, endemic to the Hawaiian islands. There are actually two species of koa native to Hawaii. The large forest koa is well known around the world for the beautiful hard wood. Koa's smaller cousin, koai?a, that once grew in the lowlands of most of the main Hawaiian Islands, has an even harder wood that is much prized for its gnarled grain