A few thoughts here, there are no high mountains in Yliakum other than, perhaps, the inaccessible parts of the Bronze doors, however everything on the Dome is high relative to the rest of the levels. It could be that when the path down to the next level is implemented, if ever, that you will find those items there.
Hops could be renamed if they are not terrestrial enough in how they occur in the game, I gather they are meant for brewing eventually.
How can you distinguish between meadow and marsh without feeling the squish of the muck under your boots? Terrain types are indistinct and abstracted, I mean what is the area around the dark wanderer? I can't tell if it is a volcanic plain or swamp or just some funny colored vegetation.
A threestem fruit tree might be a shrub and white oak could be little more than bramble.
Surely there are more important things to worry about, stick your observations on the bug tracker where they won't get lost as easily.