Woodmon

Woodmon is a Champion Level Vegetation Digimon in a dead tree. A bunch of them are known to disguise themselves as trees to absorb the energy from other unsupecting Digimon.

Evolution

 * Fresh (Baby) - Nyokimon
 * Baby (In-Training) - Yokomon
 * Child (Rookie) - Mushroomon
 * Adult (Champion) - Woodmon
 * Perfect (Ultimate) - Cherrymon
 * Ultimate (Mega) - ?????

Attacks

 * Branch Drain
 * Woody Smash

Digimon Adventure
Ogremon had a run-in with a bunch of Woodmon before the meteor containing MetalEtemon crashed down on some of the Woodmon sending Ogremon off the cliff.

Digimon 02
A Woodmon was under the control of the Digimon Emperor's Dark Rings. Some Woodmon helped to rebuild the Digital World.

Digimon Tamers
Calumon's power caused 3 Woodmon to Digivolve into Cherrymon.

Digimon Frontier
The three Mushroomon Brothers became a giant Woodmon which defeated Kazemon before being defeated, purified, and reverted back to 3 Mushroomon by Lobomon.