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This page is used to feature mushrooms that are prevalent for the particular time of the year or, during the winter months, to feature some of the less desirable or hard to find mushrooms. To see some of our previous stars follow this link to an index of previously featured mushrooms.

                February's Mushroom of the Month

Ischnoderma Resinosum


Photo Credit: Karst


Ischnoderma resinosum is a fleshy shelf-like or bracket-like annual polypore that can be found in our woods in the fall.  It is fairly common on logs and stumps in hardwood forests.  Occasionally it is attached with a small, rudimentary stem but usually it is directly attached without any stem.  When young, these mushroom exude resin drops especially near the edge of the cap.  Although when young these mushrooms are fleshy, neither I. resinosum nor its look-alike are edible.

The ochre to rusty brown to blackish caps range from 2 to 10 inches (5 to 25 cm.) across and 1 to 5 inches (2.5 to 12.5 cm.) wide.  The brackets tend to be semi-circular with a base up to 1 ½ inches (3.75 cm.) thick.  The bracket starts out quite fleshy with a felt-like to smooth cap but becomes hard with age.  With age the cap can become concentrically zoned with a glossy black resinous crust.  The pores are white to pale brown bruising darker brown.  The flesh is whitish to tan.  The spore print is white.  The caps appear singly or in groups that sometimes overlap on hardwood stumps and logs.  There is a look-alike, Ischnoderma benzoinum that grows on coniferous stumps and logs.  The mushroom fruits in September and October.


Photo Credit: Richard Hadon