Cecropia pachystachya, commonly known as Ambay pumpwood, is a species of tree in the family Urticaceae. It is native to Argentina, Paraguay and Brazil where it grows near the edges of moist forests.
Cecropia pachystachya is a small evergreen tree growing to a height of about 6 m (20 ft), and a trunk diameter of 15 to 25 cm (6 to 10 in). The tree has an open structure, with a small number of branches forking at an obtuse angle, and often forms a parasol-like shape. The twigs are hollow and are filled ...