
Chicken of the Woods
Laetiporus sulphureus
Usually grows as shelves higher on the trunk or on logs, is brighter orange on top, and has a sulfur-yellow pore surface.
Laetiporus cincinnatus
Also called white-pored sulphur shelf.
The white-pored chicken of the woods is a pinkish-orange rosette that grows from the roots at the base of oaks and other hardwoods in eastern North America. It looks like chicken of the woods but has a white rather than yellow pore surface.
Laetiporus cincinnatus
Photo coming
The tell
Pinkish-orange rosette at the base of an oak, with a white pore surface underneath.
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.

Laetiporus sulphureus
Usually grows as shelves higher on the trunk or on logs, is brighter orange on top, and has a sulfur-yellow pore surface.

Grifola frondosa
Also a rosette at the base of oaks, but its many small caps are gray-brown, not orange, and grow from a branched white base.
Also at the base of oaks, but it is cream to pale tan, much tougher, and has larger, angular pores.
A grayish-tan rosette whose white pore surface bruises black where damaged.
Edibility
Field guides list the white-pored chicken of the woods as edible when young and cooked, and many rate it equal to or better than the yellow-pored species. The cautions recorded for Laetiporus apply: a minority of people react with gastrointestinal upset.
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 pore surface. Laetiporus sulphureus is sulfur yellow underneath, while Laetiporus cincinnatus is white. The white-pored species also tends to grow as a rosette at the base of oaks, and its top is more pinkish orange.
Field guides list it as edible when young and cooked, and many rate it as good as or better than the yellow-pored chicken of the woods. As with other Laetiporus, a minority of people react with stomach upset.
At the base of oaks and other hardwoods in eastern North America, often from roots near the trunk, so it can look as if it grows from the ground. It fruits from summer into fall.
Sources
MushroomExpert.com
Fungi Growing on Wood, Gary Emberger (MushroomExpert.com)
Missouri Department of Conservation
Index Fungorum
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