Lepisanthes rubiginosa, also known as mertajam,[1][3] is a plant species from the Lepisanthes genus in the lychee family found in northern India, Indochina, Malesia and northwest Australia.

[2][4]: 649 It is a shrub, or small tree, that can grow up to 16 meters tall and has compound leaves with 2-9 pairs of leaflets.

[4]: 649 [5] Its flowers are yellow-white with a sweet scent and its fruit ripens to a dark purple/black.

[5] Its name rubiginosa is Latin for rust-coloured referning to the hairs on the twigs and leaflets.

[5] The leaves can be used as a poultice to treat itches or made into a decoction that can be drank to cure fever.