We have cavemoss, but rocks and boulders in the forest often have moss in them also. Moss is nice. There should be some rock-moss forageable that would be like cavemoss but a bit worse.
I'm not sure that I have a strong argument against sketch colors - Jorb, November 2019 http://i.imgur.com/CRrirds.png?1 Join the moderated unofficial discord for the game! https://discord.gg/2TAbGj2 Purus Pasta, The Best Client
also sphagnum moss is a pretty interesting thing that can grow in swampy and grassy areas, it holds crazy amounts of water and could be used to extract these amounts of water OR could be used to help tree plantings.