A large tree. It grows 30 m tall. The leaves are dark green and shiny. They have blisters or bubbles on the upper surface. The edges of the leaves are wavy. The fruit are in cups.
Monoecious, evergreen tree, 8-30 m, with bark pale when young. Leaves elliptic-oblong, glossy, with pits in vein axils. Flowers in axillary cymes, polygamous, yellowish.