Combretum quadrangulare, or commonly known as sakae naa, is a small tree of the family Combretaceae, up to 10 m high.

The tree grows wildly or is planted in Vietnam, Cambodia, Laos, Myanmar and Thailand.

Studies of the chemical constituents of this plant have revealed that alcoholic and other extracts from the roots and seeds could kill earthworms.

Tree, 5-10m high: young branchlets acutely quad-rangular or very narrowly quadrialate.

Fruit dry, thinly quadrialate: seed brownish red, ellipsoid, 4- angled.