Striking blue-green, tiny cups. The fungus also stains green the wood on which it is growing.
Very small, like my pinky fingernail.
Found on trail at Audubon Canyon Ranch preserve.
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.