Trigonobalanus excelsa, commonly called the Colombian black oak,[2] is a species of plant in the family Fagaceae.

It is found in mixed forests and in monospecific stands, typically in areas with steep slopes and poor soils.

Some populations grow near forests of white oak (Quercus humboldtii).

The main population in Huila is not protected and is threatened with habitat loss from ongoing deforestation.

Other populations, like those in Antioquia and Bolivar departments, have been greatly reduced by deforestation, and survive only in remnant forest patches.