Muskegs, also called treed bogs, are cold, acidic, sparsely wooded northern peatlands with composition similar to open bogs (mosses, sedges, and ericaceous shrubs), but with scattered stunted trees of black spruce (Picea mariana) and tamarack (Larix laricina). Plant diversity is typically low, but the community is important for a number of boreal bird and butterfly species, some of which are quite specialized and not found in other communities.
