These corky or leathery polypores can be differentiated by the configuration of their spore-proucing surface. In Daedaleopsis (derived from the Greek word Daedalus, meaning “maze”) the pores are usually long and sinuous or mazelike and have relatively few cross walls. However, the configuration varies considerably leading to confusions with numerous other polypores.
The fruiting body of Daedaleopsis confragosa is annually produced, and it has shelf-like or sometimes bracket-like shape. The texture can be leathery or corky when fresh but they become rigid when dry. The cap can have 3 – 22 cm broad, with a fan-shaped to semi-circular in outline, broadly convex to plane. The surface of the cap is mainly dry usually zoned or ridged concentrically and it can have a reddish-brown to brown to grayish color, sometimes blackish in old age with a margin thin and acute.
Our particular specimens were found growing in groups in a willow tree, but it also occurs on birch and other hardwoods and very rarely on conifers (Figure 1). It is very common in eastern North America and the Pacific Northwest.
Reference: Arora, D. (1996). Mushrooms Demystified: A Comprehensive Guide to the Fleshy Fungi (Illustrate). Ten Speed Press.12.13.16