Oreja de Judas (Auricularia auricula-judae)

The fruit body of A. auricula-judae is normally up to 90 mm (3.5 in) across and up to 3 mm (0.12 in) thick. It is often reminiscent of a floppy ear, but can also be cup-shaped. It is attached to the substrate laterally and sometimes by a very short stalk. Fruit bodies have a tough, gelatinous, elastic texture when fresh, but dry hard and brittle.[17] The upper surface is a reddish-tan-brown with a purplish tint and finely pilose (covered in tiny, grey, downy hairs).[17] It can be smooth, as is typical of younger specimens,[12] or undulating with folds and wrinkles. The colour becomes darker with age.[17] The under surface is a lighter grey-brown and smooth, sometimes folded or wrinkled, and may have "veins", making it appear even more ear-like.[17]