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reishi (Ganoderma lucidum), photo
Photo
Medicinal

ReishiGanoderma lucidum

lingzhi

Ganoderma lucidum is a varnished wood-growing fungus widely distributed in Europe. Searches for reishi often bring together this species, Asian lingzhi, and research on their preparations.[1][2][7]

Not edible. Tough or woody; used as tea or extract. Never eat a wild mushroom identified only from photos.

  • Season in Mexico
  • HabitatWood of trees
  • GrowingMedium
  • FamilyPolyporaceae

How do you identify reishi?

Cap
Kidney-shaped, up to 20 cm across; red to pinkish-brown at maturity, according to the description of Romanian specimens.[10]
Pores
Round, cream-colored pores, 4–5 per mm; they turn brown under pressure.[1]
Stem
Usually 5–12 × 1–3 cm, with an uneven, reddish-brown surface.[1]
Spore print
Brown.[1]
Smell
Mushroom-like.[1]

Can you eat reishi?

It is classified as inedible. Published reports describe liver injury associated with powdered preparations labeled lingzhi, including a fatal case; the patients also took other medicines. A review identifies possible interactions with anticoagulants and antiplatelet drugs, with a theoretical bleeding risk.[1][8][9]

How do you grow reishi?

Temperature

Colonization21–27 °C

Fruiting21–27 °C

Humidity

Colonization0–95 %

Fruiting0–92 %

Full cycle: 90 days

Light
Indirect

Substrates

  • Supplemented hardwood sawdust
  • Hardwood logs

Woods it likes

  • Birch
  • Alder
  • Hackberry
  • Soft Maple
  • Cherry
  • Poplar
  • Plum
  • Beech
  • Sweetgum
  • Mulberry
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Where and when does reishi grow?

Grows on living and dead broadleaf trees, occasionally on conifers, in forests, parks, and gardens. It causes white rot.[1]

The consulted literature gives summer and autumn for Europe. Fruiting months in Mexico remain unconfirmed for G. lucidum sensu stricto.[1][3]

Ganoderma lucidum sensu stricto is the European species. A study documented restricted populations in northern California and Utah, possibly introduced. Mexican literature questions its American distribution; Mexican records published under this name require taxonomic review.[3][11]

See the mushroom map

About the name

Ganoderma lucidum sensu stricto is the species described from Europe. The widely cultivated Chinese lingzhi belongs to G. sichuanense. A study of type material considers G. lingzhi a later synonym of G. sichuanense. These names explain some of the confusion in older records and studies.[2][11]

Fun facts

  • Lucidum refers to its sheen: the Latin word means “bright, shiny.”[1]
  • DNA analysis of the first cultivated Chinese lingzhi helped clarify its identity.[2]

Frequently asked questions

Sources

  1. A Review of Chemical Composition and Bioactivity Studies of the Most Promising Species of Ganoderma spp.
  2. Re-Examination of the Holotype of Ganoderma sichuanense (Ganodermataceae, Polyporales) and a Clarification of the Identity of Chinese Cultivated Lingzhi
  3. Diversidad y distribución de Ganoderma (Polyporales: Ganodermataceae) en Sonora, México
  4. Uso de subproductos forestales como cobertura para la producción comercial de champiñón (Agaricus bisporus)
  5. Safety and tolerability of Ganoderma lucidum in healthy subjects: a double-blind randomized placebo-controlled trial
  6. A double-blind, randomised, placebo-controlled trial of Ganoderma lucidum for the treatment of cardiovascular risk factors of metabolic syndrome
  7. The Nutritional Significance of Ganoderma lucidum on Human Health: A GRADE-Assessed Systematic Review and Meta-Analysis of Clinical Trials
  8. Fatal fulminant hepatitis associated with Ganoderma lucidum (Lingzhi) mushroom powder
  9. Herb–drug interactions: an overview of systematic reviews
  10. Natural Bio-Compounds from Ganoderma lucidum and Their Beneficial Biological Actions for Anticancer Application: A Review
  11. The Species Identity of the Widely Cultivated Ganoderma, ‘G. lucidum’ (Ling-zhi), in China

Written with AI help from the cited sources. A second model checked every fact against those sources and removed what they did not support.

Image credits

Photos are under free licenses (CC0, CC BY or CC BY-SA).

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