Discina ancilis, commonly known as pig's ears[1][2][3] is a brown to tannish, wrinkled, cup- or ear-shaped fungus, sometimes with short, stout stalk.

The cup measures 2–10 centimetres (3⁄4–4 inches) wide;[4] with a disc-like, whitish exterior, and a dark brown to tan interior.

The spores are 30–35 x 12–14 μm, spindle shaped, minutely warted, with three oil drops and knobs at each end, located in the cup.

Disciotis venosa is more deeply veined, and has smooth spores; it is typically found in deciduous woods.

[5] It is found singularly or in groups, on humus or rotten wood in coniferous areas; near melting snowbanks in western mountains.