Wood-o-maze-o-porus     Subtribe

This is a key to gilled mushrooms, that is, mushrooms having a definite cap with a fertile surface consisting of gills. The fruiting body usually also has a stem, although that may be lateral or absent (usually, then, the mushroom is growing from wood). You can use this key to identify mushrooms that you find.

Fertile surface usually a layer of vertical tubes, of which the mouths are visible as pores on the underside of the cap or shelf.
Fruiting bodies usually tougher or harder than the "normal" gilled mushrooms, being leathery, corky, or woody. But they can be quite tender while actively growing
Once grown, they do not decay easily, remaining on the substrate for months or years
They often grow on wood, although a few are terrestrial (even those are usually growing on buried wood)
Fruiting body is usually a flat shelf, or hoof-shaped, protruding directly from the substrate, although sometimes it may have a short stalk.
Some forms never grow away from the substrate at all, so that all that is visible of the fruiting body are the pores.
Sometimes the pores are so minute that the fertile surface seems solid, until you look closely

Growing on wood

Fungi with a hymenophore of irregular, interweaving plates that divide the space between them into long, twisting chambers and maze-like passageways.
Usually the plates are quite hard and woody, sometimes just tough, never as soft and fragile as the gills on gilled mushrooms

Diagnosis

• Top concentrically wrinkled, with the appearance of zoned wood, though perhaps a little bit hairy

Narrow down your identification:

• Fruiting body hard, woody

Glossary

Mushrooms

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