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Fungus

Hen of the woods

Grifola frondosa

Also known as: maitake, ram's head

A choice edible fungus that fruits at the base of mature oak trees — large rosette-shaped clusters of overlapping grey-brown fronds, often weighing several pounds (occasionally to 50+ lbs). Found on Staten Island in the Greenbelt's oak forest. Notable in traditional Chinese and Japanese medicine; the Japanese name *maitake* means 'dancing mushroom' — said to be from the joy of finding one. D-fraction polysaccharides are under active research for immune-modulation applications.

Scientific

[[maitake|Grifola frondosa]] is a polypore fungus that produces large rosettes of overlapping grey-brown fan-shaped fronds at the base of mature oaks. Single fruitings of 5–15 lbs are typical; exceptional specimens have exceeded 50 lbs. Fruits late summer through fall, often returning to the same tree base year after year.

The fungus causes butt-rot decay in living oak trees — slow, progressive structural decline of the heartwood. Trees may host hen-of-the-woods for decades while gradually weakening.

Choice edible. Highly cultivated commercially in Japan since the 1980s under the name maitake (舞茸). D-fraction polysaccharide extracts are under active research as immune modulators; some clinical evidence in cancer-supportive-care contexts.

On Staten Island

Fruits at the base of mature oaks in the Greenbelt’s oak-[[hickory|hickory]] forest. Less commonly encountered than chicken-of-the-woods (which fruits higher on dead wood and is harder to miss), but well-known to dedicated local foragers. The species’ habit of returning to the same tree across years means productive sites can be revisited.

See also

Auto-generated from this entry’s typed relations: frontmatter, grouped by relation type so the editorial signal isn’t flattened.

  • Instance of: [[traditional-chinese-medicine]]
  • Substrate of: [[eastern-white-oak]]
  • Member of: [[fungus]]
  • Contained by: [[staten-island]]

Sources

  • North American Mycological Association species accounts
  • Maitake D-fraction clinical-research literature
  • TCM and Japanese medicinal-fungi documentation

Rooted in life.

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