Leucaena leucocephala is a small fast-growing mimosoid tree native to southern Mexico and northern Central America (Belize and Guatemala). It is now naturalized throughout the tropics including parts of Asia.

Common names include white leadtree, white popinac, horse tamarind, ipil-ipil, koa haole, tan-tan, and tangantangan.

Leucaena leucocephala is used for a variety of purposes, such as fencing, soil fertility, firewood, fiber, and livestock fodder.