Nothofagus dombeyi typically grows to a height of 20 to 30 meters (65 to 100 feet) and has a rounded crown with a broad, spreading canopy.
In spring, Nothofagus dombeyi produces inconspicuous flowers that are arranged in clusters called catkins. These flowers give rise to small, winged fruits known as samaras, which are dispersed by the wind.

Nothofagus dombeyi is an important tree in its native range, playing a significant ecological role providing habitat and food for various wildlife, including birds and insects.
Overall, Nothofagus dombeyi is a remarkable , its elegant foliage, autumn colours, and ecological significance make it a cherished species in its natural habitat and an appealing choice for ornamental plantings.