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Oak Mazegill

Inedible Inedible
Autumn Autumn
Spring Spring
Summer Summer
Winter Winter

A medium to large size, hard, beige to ochre, perennial polypore with a maze-like pore surface most of all on dead Oaks.

Mushroom Type
Common Names Oak Mazegill (EN), Thick-Maze Oak Polypore (US), Tagell Ddryslyd Derw (CY), Gmatwek Dębowy (PL), Labirintustapló (HU)
Scientific Name Daedalea quercina
Synonyms Trametes quercina, Lenzites quercina
Season Start All Year
Season End All Year
Average Mushroom height (CM)
Average Cap width (CM) 4–20
Please note that each and every mushroom you come across may vary in appearance to these photos.

Fruiting Body

Perennial (rarely annual), 4–20 across, projecting 3–8 cm from the substrate. Its shape depends on the surface it grows, could be semi-circular, shelf-like and somewhat semi-conical too. Broadly attached to the substrate and always thicker at the attachment.
Sterile (upper) surface is cream, beige to ochre, velvety at first, then becoming uneven with small, hard warts. Concentric rings of growths are often can be seen. Margin is sharp and fairly even, often paler than the rest of the upper surface.

Pores

Tubes up to 1–4 cm long, cream or beige to ochre. Pores really wide, more or less maze-like, sometimes almost lamellate with very thick walls.

Flesh

2–5 cm thick, tough, corky, more or less homogenous (but sometimes it appears to be zonate).

Habitat

Most of all it can be found on standing or fallen dead wood of Oaks, but it is rarely recorded from other hardwoods (e.g., Sweet Chestnut) too. It grows solitarily, but often forms tiers. It is not fully clear whether it is a necrotrophic parasite (as some authors suggests) or saprotrophic (as others states), but it is causing brown-rot (of the heartwood of its host).

Possible Confusion

It is hard to confuse if fully matured, but younger fruit bodies can be confused with other polypores with maze-like pore surface.
Blushing Bracket (Daedaleopsis confragosa) has thinner pore-walls, and prefers Willows and Poplar over Oaks.
Birch Mazegill (Trametes betulina, syn: Lenzites betulinus), pictured, has a hairy, suede-like zoned skin, and thinner, more gill-like (lamellate) than maze-like (labyrinthoid) pore surface. It prefers Birch and Beech, but can be found on oaks and other hardwoods too.

Taste / Smell

Inedible. Smell pleasant, mushroomy, taste not distinctive to slightly bitter, but it has tough texture.

Frequency

Occasional and widespread in the UK.

Spores

Spore print is white. Spores ellipsoid, colourless (hyaline), smooth and inamyloid (meaning: there is no starch in the spore wall).

Other Facts

Oak Mazegill (Daedalea quercina) is the type species of genus Daedalea. The genus was named after the skillful architect and craftsman, Daedalus [Greek: Δαίδαλος] who built the Labyrinth [Greek: Λαβύρινθος] at Knossos, upon the request of King Minos of Crete, which imprisoned Minotaur [Greek: Μινώταυρος], the monster who had bull head and human body. It is worth reading the whole myth! The epithet, ‘quercina‘ refers to the main host/substrate of this species, which is Oak (Quercus).

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