Ischnoderma resinosum (Schrad.) P. Karst.
Late Fall Polypore, Resinous Polypore
This polypore mushroom is a North American native, found throughout much of the continent.
Identification: These fungi emerge from dead hardwoods or conifers, looking like gnarled, mummified ears. The “ears” (caps) are 1¾-12" (5-30 cm) wide and ⅜-1" (1-3 cm) thick. They sometimes emit droplets of water, which ball up on top of the resinous surface like beads of mercury. A tan to reddish brown resin often encrusts these fungi, whose interiors are white. There is no stalk.
Edibility: Said to be edible when young and wet with exuded water, but these become corklike as they age.
Medical: These mushrooms contain compounds that are being investigated for possible use in inhibiting tumor growth in cancers.
Ischnoderma resinosum on Michael Kuo's MushroomExpert.com
Ischnoderma resinosum on RogersMushrooms.com
Ischnoderma resinosum by Gary Emberger at Messiah College
Ischnoderma resinosum at Wisconsin Mushrooms
Ischnoderma resinosum on AmericanMushrooms.com
Ischnoderma resinosum at North Carolina State University's Mycological Herbarium
Ischnoderma resinosum on MycoBank
Ischnoderma resinosum description by Thomas H. Kent, last updated 16 Aug 2013.