Observation 137748: Inonotus quercustris M. Blackw. & Gilb.

When: 2013-06-26

Collection location: Buncombe Co., North Carolina, USA [Click for map]


Who: Mike Hopping (AvlMike)

No specimen available

This polypore grew on wounds of a live chestnut oak, Quercus prinus, 10/2012, in the mountains of Western North Carolina. The sterile surface of an older cap on the same tree was firmer, wrinkled and primarily orange. Cap was sparsely and finely hairy. The pore surface dripped clear or amber fluid, depending on the day of observation. Flesh of the young cap was watery at the margin, firming toward the point of attachment. Flesh color initially brownish yellow, darkened immediately through red to blackish brown. Cap and pore surfaces also bruised brown. KOH turned all parts slowly black. Smell and taste were mild.

Species Lists



Inonotus quercustris.jpg
Inonotus quercustris young pores.jpg
Inonotus quercustris cut.jpg

Proposed Names

47% (2)
Eye3 Eyes3
Used references: MushroomExpert
Based on chemical features: KOH on flesh and cap
28% (1)
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Mike Hopping (AvlMike)
2015-01-17 18:49:25 EST (-0500)

Thanks for working on this, Mr. Baker. My resources are limited to macroscopic features, generally available texts, and advice from folks with greater experience. The mummified carcass of the growth pictured in this observation still hangs on that oak. If there’s ever another fruiting, I’d love to be more definitive about the ID. Have you learned of any characteristic not covered in my description that could sway the case? Do you know of anyone sufficiently interested in the Inonotus group to be glad of a sample, if and when?

Hi Mike —
By: Erlon (Herbert Baker)
2015-01-17 16:17:15 EST (-0500)

I did some more research. I think Inonotus quercustris is a good guess. The flesh is similar to Fistulina hepatica.

Best wishes, Erlon

Created: 2013-06-26 20:27:42 EDT (-0400)
Last modified: 2015-01-17 16:17:34 EST (-0500)
Viewed: 303 times, last viewed: 2018-06-18 18:49:29 EDT (-0400)
Show Log