Shiitake

Lentinula edodes

Also known as: Black Forest Mushroom, Oakwood Mushroom

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Edibility edible
Phylum Basidiomycota
Family Omphalotaceae
Conservation Not threatened; widely cultivated

Complete Taxonomy

Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Omphalotaceae
Genus: Lentinula
Species: L. edodes

Description

Lentinula edodes, the shiitake mushroom, is the second most cultivated mushroom globally and has been used in Asian cuisine and medicine for over 1,000 years. Native to East Asia, it grows naturally on decaying hardwoods. The name "shiitake" combines Japanese "shii" (a type of tree) and "take" (mushroom). Modern cultivation on logs or sawdust blocks has made it available worldwide.

Physical Characteristics

Cap Shape: Convex becoming flat with inrolled margins
Cap Color: Dark brown to tan with white scales or fibrils; 5-10 cm diameter
Size: 5-10 cm diameter
Gill Attachment: Adnexed to nearly free, white becoming cream
Spore Print: White to cream
Stipe: Tough, fibrous, cream to brown, often curved; 3-6 cm tall
Habitat: Saprotroph on dead hardwoods, especially oak and chestnut
Fruiting Season: Spring and fall in wild; year-round in cultivation

Distribution

Native to East Asia; now cultivated worldwide

Habitat

Grows on dead or dying hardwood trees, especially oaks, chestnuts, maples, and other broadleaf trees in temperate forests.

Ecological Role

Important decomposer of hardwood lignin and cellulose in Asian forests. Contributes to nutrient cycling and forest ecosystem health.

Medicinal & Nutritional Properties

  • Contains lentinan, a beta-glucan with anti-tumor properties
  • Rich in B vitamins, especially B5 (pantothenic acid)
  • High in copper, selenium, and zinc
  • Supports immune system function
  • May help lower cholesterol
  • Contains eritadenine, which may reduce cardiovascular disease risk
  • Antiviral and antibacterial compounds
  • Source of vitamin D when exposed to UV light

Cultural Significance

Cultivated in China and Japan for over 1,000 years. Central to Asian cuisines. Considered a symbol of longevity in Traditional Chinese Medicine. Second most produced mushroom globally after button mushrooms. Annual production exceeds 1 million tons.

Fascinating Facts

  • Cultivation dates back to 1200s in China
  • Grown on oak logs or sawdust blocks
  • Must be cooked; can cause dermatitis if eaten raw
  • Umami-rich, savory flavor from glutamate compounds
  • Stems too tough to eat but used for flavoring broths
  • Can be dried and stored for extended periods
  • Spores released dramatically after rain (creating visible clouds)
  • Research shows potential in treating various cancers