Latin auricularia (adj) = earlike, from auricula, diminutive for auris=ear - auricula Judae = Judas' ear
Synonyms: Auricularia auricula; Hirneola auricula ( Latin, from hirnea =a vessel for liquids, especially wine)
Common names: Jew's Ear; Wood Ear; Tree Ear
Fruiting body up to 8 cm across (occasionally more), ear-shaped or cup-shaped, gelatinous when fresh, later rubbery, hard when dry. Inner flesh watery-gelatinous.
Outer surface pale brown to dark brown, finely hairy, with veins or ribs
Fertile inner surface various shades of brown, sometimes with a purple tinge, wrinkled, lobed or smooth
Stem absent or just visible
Spore print white. Spores 12-18 x 4-8 microns, sausage-shaped.
Habitat: on logs, stumps, dead branches, etc. Solitary, clustered or in groups. Widely distributed, occuring all year round, common in cool weather.
More pictures: 1, 2, 3