Elfcups

These gorgeous, blue-green cup fungi fruit infrequently, and I was lucky to find them in such good shape! They have a cup-shaped fruiting body with a tiny, central stem. The fruiting body becomes flattened with age. They ranged in size from 2-4 mm wide.

Chlorociboria species contain a quinone pigment called xylindein, which is the reason for the characteristic bluish-green stain that occurs on wood that's infected by this species.

Chlorociboria aeruginosa is often confused with Chlorociboria aeruginascens. But, Chlorociboria aeruginosa tends to be a little smaller and have a centrally attached stipe rather than a laterally attached stipe.