It is a small tree, usually 15 m but reaching 24 m tall, with rough, lenticellate brown bark (occasionally gray).

At higher altitudes it takes on a more shrubby growth form.

Their bases are acute to rounded, with often revolute margins (when living), and obtuse, often retuse apices.

There are 5 to 9 pairs of nerves, looped and joining close to the margin.

In specimens from higher altitudes this calyx is enlarged up to 8 mm in diameter.