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Leucangium oneidaense is a truffle-forming ascomycete (Morchellaceae) described in 2025 from Oneida County, New York, where it was found under eastern hemlock. It was the first Leucangium reported in the United States east of the Rocky Mountains; a second collection later came from Massachusetts. Unlike the warty Oregon black truffle (L. cascadiense), its fruit bodies are covered in dense external hairs and lack warts. It is known from very few collections.
Unknown. It is a newly described species known from only two collections, so there is no culinary or toxicity information. Not recommended for eating.
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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 Entries are compiled from cited sources and reviewed, but may be incomplete or out of date — check the sources, and never rely on this library alone to identify or eat a mushroom.
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