Geoffroea decorticans, the chañar, kumbaru, or Chilean palo verde (green wood), is a small deciduous tree, up to 8 meters (25 ft) tall that inhabits most arid forests (montes or espinales) of southern South America.

The chañar is cold and drought deciduous; it loses its leaves in winter, and possibly in summer if conditions get too dry.

The peeling tan to brown bark is eventually shed revealing the dark green, "immature" trunk beneath.

[citation needed] The tree inhabits dry to arid spiniferous forests in a rather broad area of southern South America which extends mainly through I to IV regions of Chile and central and northern Argentina and throughout highland Bolivia, though it is also found in Paraguay, Peru and Uruguay.

[citation needed] The seeds and fruit, being edible, are valued as human and animal feed, and the yellow wood is suitable for carpentry and furniture making once dry.