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A red-pigmented mycoparasite of wild agaric and polypore fruit bodies. It is the traditional name for the cobweb fungus of cultivated mushrooms, whose asexual stage is Cladobotryum dendroides (older name Dactylium dendroides). Multigene work (Tamm & Põldmaa 2013) found the name widely misused: most farm cobweb isolates are H. odoratus, and H. rosellus in the strict sense is Eurasian and not known from North America.
Not edible. Infected mushrooms rot and are unsaleable.
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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 Entries are compiled from cited sources and reviewed, but may be incomplete or out of date — check the sources, and never rely on this library alone to identify or eat a mushroom.
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