Xanthostemon verdugonianus, commonly known as mangkono or Philippine ironwood, is a species of plant in the family Myrtaceae.

Mangkono (also spelled mangkuno or mancono) is also known as palo de hierro ("iron wood") in Spanish.

The fruits are dehiscent and septicidal, with two or three sections that open when ripe to disperse small semicircular seeds.

[1][6] Because of its inherent hardness and high density, Mangkono has long been recognized as a substitute for the world-famous Lignum vitae (Guaicum officinale L.).

Mangkono is an excellent material for the bearing or stern bushing of a steamship's propeller shaft.

Its other uses are as rollers, shears, saw guide blocks, tool handles, novelties, poles and piles for wharves and bridges, and posts for houses.