Mossy Maze Polypore (Cerrena unicolor)

Mossy Maze Polypore
Photo by Luciearl

Mossy Maze Polypore (Cerrena unicolor) is a widespread and very common bracket fungi. It occurs in Europe and Asia, and throughout North and Central America. In the United States it is common east of the Great Plains, uncommon in the Pacific northwest, and absent elsewhere. In Minnesota it is very common in the eastern half of the state, uncommon to absent in the western half. It is found year round in deciduous and mixed forests, on dead hardwood stumps and logs.

When growing on the underside of a log it looks like a pore surface that has lost its cap. When on the top or side of a log or stump it produces a semi-circular shelf-like or bracket-like cap. The upper surface is whitish to brownish or dark brown, but is often green due to a covering of algae. It has a broad pale margin and is densely hairy, sometimes velvety.

The pore surface is whitish when young, becoming smoky gray at maturity. The pores are slotted, maze-like. The flesh is leathery, tough and inedible.

http://www.minnesotaseasons.com/Fungi/Mossy_Maze_Polypore.html

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