
Green Elfcup - Chlorociboria aeruginascens
Greenish blue cup fungi with off-centered stems. They were about 5 mm wide.
This species contains 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.
Habitat: Rotting birch

Chlorociboria aeruginascens is a saprobic species of mushroom, commonly known as the green elfcup or the green wood cup because of its characteristic small, green, saucer-shaped fruit bodies. Although the actual fruit bodies are infrequently seen, the green staining of wood caused by the fungus is more prevalent.
Similar species: Helotiales
By Christine Young
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Uploaded Jan 20, 2019. Captured Sep 13, 2018 11:04 in 91 Main St, Sharon, CT 06069, USA.