Atavia - "What, is this the 5th project now?"
Atavia is divided into 4 baronies: Graam, in the top-left, Bös, in the top right, De Bahn to the right, and A'Tirae at the bottom.
Yeah, okay, great. What was that about myconids?Fine.
The top third of the map is the Motherland: an aboveground mushroom forest growing from the Mother Pillar, a 20-story tall fungus on the border of De Bahn and Bös. The area around the Mother Pillar is... unpleasant, let's say.
Myconids aren't very common in the Motherland: a sapient creature takes quite a lot of energy compared to something like a Shrieker. Because of the immense amount of material required to keep a Myconid alive, they aren't used for "menial" tasks, such as releasing spores: there are cheaper, easier fungi for that. Myconids are created specifically for communication: to be the pleasant, humanoid face of the inscrutable alien mind of the Motherland.
Communes are memory stores for the Motherland: they can't move and can't speak, but are connected to the Motherland. When a Myconid needs the answer to a question, a Commune absorbs it, writes the answer into the Myconid's "flesh" and spits it back out.
Myconid's don't last long: the whole "having a brain thing" burns them out after a couple days.