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Cinnamon Bracket
A soft, stemless, dull orange to cinnamon bracket on dead hardwood that turns bright purple to lilac with KOH. It is poisonous: polyporic acid, which makes up a large share of its dry weight, causes a delayed neurotoxic syndrome with liver and kidney involvement. Dyers use it for violet colors.
Poisonous; do not eat. It contains polyporic acid, which caused nausea, impaired movement, visual disturbance and liver and kidney failure beginning about 12 hours after eating in reported cases; urine turned violet. Patients recovered in about a week. It has been mistaken for beefsteak fungus (Fistulina hepatica); chicken of the woods is another look-alike.
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Mycology is an evolving science: names, classifications and safety information change as research advances. Entries are compiled from cited sources and reviewed, but may be incomplete or out of date — check the sources, and never rely on this library alone to identify or eat a mushroom.
