The Matthew Lillard biome is characterized by high mountains, drastic temperature shifts, and revolting smells.
The climate is so indecisive that everything tends to freeze at night and sublimate when the sun rises.
This leads to a process in which plants and animals tend to die and come back to life in a disturbingly short amount of time.
Leading experts believe that this frequent cycle of death and decay followed by rebirth explains the rotten smells.
That, or its inhabitants are just very stinky.
Considering the only country to exist in this biome is the Uniturd Shits of Aderrierica, the second option is entirely likely.
Flora: The Romeo and Juliet Flower