Coniferous, mixed, and hardwood forests, as well as pastures, lawns, and other habitats, occur in this region. Rainfall is generally plentiful but not too heavy. Ground ranges from dry to very wet in different places. Both dense forests and more open woods occur. There are also expanses of scrub or lichen-covered rock where the rocky Canadian Shield lies just beneath the surface or is exposed.

Hardwood trees include elm, oak, birch, beech, and other hardwoods in forests, and apple trees occur elsewhere. Conifers include pine, spruce, tamarack, and juniper.

Of each kind, various species occur.

Each habitat produces its own distinctive mix of mushroom species, lichens, and slime-molds.