Heipijizong
A long-stemmed rooting shank of East and South Asia that grows from buried rotting wood through a rooting pseudorhiza. In China it is cultivated at scale under the name 'Heipijizong', mostly as Oudemansiella raphanipes. China produced 19,502 tons in 2020, according to the China Edible Fungi Association as cited in a 2024 study.
Edible; commercially cultivated and sold in China and Malaysia. Cultivated product carries little identification risk. The sources reviewed name no dangerous look-alikes. Wild collectors should dig up the base: the long rooting pseudorhiza and glutinous dark cap are key features. Any small brown mushroom without a pseudorhiza should be treated as unknown.
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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 Entries are compiled from cited sources and reviewed, but may be incomplete or out of date — check the sources, and never rely on this library alone to identify or eat a mushroom.