
Turkey Tail
Trametes versicolor
Has a white underside covered in tiny pores. False turkey tail is smooth underneath.
Stereum ostrea
Also called golden curtain crust.
False turkey tail is a thin, zoned bracket fungus with orange, red-brown and tan bands. It looks like turkey tail from above, but its underside is smooth. It grows on dead hardwood year-round.

The tell
A thin, banded bracket like turkey tail, but with a completely smooth underside and no pores.
Field marks
Cap, underside and stem show in a photo. The spore print does not, and it is often the deciding check.
Where and when
Lookalikes
Each card says how to tell the two apart.

Trametes versicolor
Has a white underside covered in tiny pores. False turkey tail is smooth underneath.
A related crust with a yellow-orange underside and a hairier, less brightly zoned top, often spreading flat on the wood.
Smaller and fan-shaped, with crimped, gill-like folds on a whitish underside.
Edibility
Field guides list false turkey tail as inedible because it is thin and leathery. It is not known to be toxic.
This page states what field guides record. It is not advice to eat, taste or handle anything, and a photo cannot settle edibility. If someone has eaten a wild mushroom that may be toxic, call poison control (1-800-222-1222 in the US) right away, before symptoms start: the deadliest species act hours later.
FAQ
The underside is the test. Turkey tail has tiny pores on a white surface; false turkey tail is smooth, with no pores, and usually brown to orange underneath.
It is not known to be toxic. Field guides list it as inedible because it is tough and leathery.
On dead hardwood logs, stumps and branches across North America, especially in the East. It grows and persists year-round.
Sources
MushroomExpert.com
Fungi Growing on Wood, Gary Emberger (MushroomExpert.com)
Missouri Department of Conservation
Index Fungorum
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