Dahlrhun

It seems that the Dahlrhun (singular and (in this case) plural) are woodlands (and the animal life within them) that have some form of comunal sentience. 

 They seem to chose a humanoid to speak for them and act as an intermediary with other sentient creatures.  This humanoid seems to be a part of the Dahlrhun. 

 They are apparently very old.

They have control of some extent over nature in their realm.

Dahlrhun

Imearth Barlycorn