The eastern puna is a grassland but with shorter carpet of grass, broken by rock screes and formations with specific plant communities. Nevertheless, the floristic composition is heterogeneous and is also broken by small shrubs and occasional patches of keñua forest.
Typical formations of this region are the peat bogs or bofedales that are distributed in the depressions on slopes or at the base of the valleys and has the appearance of a complex of dense, green and moist cushions.