The Thin-Walled Maze Polypore is a decomposer of dead wood that can be found year-round, though mostly fruiting in the warm months. Widely distributed. It grows on deciduous wood and rarely coniferous wood. It grows on Oak less often than Daedalea quercina, which generally has thicker "maze" walls.

The cap surface color can be tan to brown to white. The cap pattern presents different zones of color in a "ripple" effect from the center outward (concentrically zoned). The pore surface has a great deal of morphological variation which can present pores, gill-like elongated pores, or (most commonly) maze-like structures. When fresh, it bruises salmon-pink to brownish where handled. KOH darkens surface colors, and ammonia changes surface colors pinkish, at least in fresh samples.

July 27th, 2023 Field Notes - Indian Cave State Park

September 28th, 2023 Field Notes - Indian Cave State Park

habitat: Lignicolous (on wood)

growth habit: Gregarious (growing as a group)

Cap: shape: flabelliform (fan-shaped) [1]; texture: zonate to velvety, velutinous (short, soft) to pubescent (finely fuzzy) to smooth to uneven (bumpy); surface moisture texture: dry - dull; margin shape: straight; margin: undulating (wavy) to entire, even, regular

Gills: thickness: tapering; spacing: crowded to close; edges: eroded (gnawed) to crisped (crinkled); misc features: arid (dry)

Stem: location: eccentric (off-center) to sessile (missing)

[1] KOH dark gray Ammonia red

Growing on oak