The Resinous Polypore (Ischnoderma resinosum) is a decomposer of dead deciduous trees and can be found in the fall. It is widespread in North America with its greatest occurrence rate west of the Rocky Mountains.

The top-of-cap shape ranges from fan-shaped to kidney-shaped to semicircular. The cap texture is velvety. The cap color has a "ripple effect" (zonate) and ranges between reddish and darker brownish colors, with the youngest growth whitish toward the margin. The consistency is soft and spongy and can be easily sliced when young. As it ages, it becomes harder and more leathery.

The under surface is covered in small pores. The pore surface is whitish when young, bruising brownish with handling and with age. The spore print is white.

September 25th, 2023 Field Notes - Indian Cave State Park

Growing on fallen Basswood tree in low, moist woodland area.

October 24th, 2023 Field Notes - Indian Cave State Park

Form Group: Exudate transparent to yellow to orange to red Form Group: polypore Substrate: Substrate: lignicolous Growth Habit: Growth Habit: imbricate to single to gregarious Habitat: Low , shaded, oak/hickory forest along trail Growing on Tree: Possibly walnut Tree: ( Desciduous ) Decay Type: Decay Type: ( White Rot ) Cap: Pileus: ( Shape: ( Top view: dimidate ); Surface: ( texture: velvety, velutinous to zonate; moisture: dry-dull; color: reddish brown to orange-brown to white ) ) Shape: Shape: ( Top view: dimidate ) Surface: Surface: ( texture: velvety, velutinous to zonate; moisture: dry-dull; color: reddish brown to orange-brown to white )