Hypsizygus tessulatus

Hypsizygus tessulatus

Synonyms
  • Beech Mushroom
  • Buna shimeji
Scientific Classification
Kindom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Tricholomataceae
Genus: Hypsizygus
Species: Tessulatus


Hypsizygus tessulatus falls under the umbrella concept of the Japanese "Shimeji" mushrooms. Firm textured, this mushroom is considered one of the most "gourmet" of the Oyster-like mushrooms. Recently, this mushroom has been attributed to having anti-cancer properties. Increasingly better known, this obscure mushroom compares favorably to Pleurotus ostreatus and Pleurotus pulmonarius in North American, European and Japanese markets.


  • Spore print: white
  • Mycelium: white, cottony, resembling Pleurotus ostreatus mycelium but not as aerial. Also, the mycelium of H. tessulatus does not exude the yellowish-orange metabolite nor does it form the classically thick, peelable mycelium, two features that are characteristic of Pleurotus species

Cultivation[edit | edit source]

Ostreatus is industrially cultivated edible mushroom and although they are of the easiest mushrooms to cultivate, they are considered a gourmet mushroom.

Parameters[edit | edit source]

Spawn run

  • Temperature: 70-75° F (21-24° C)
  • Humidity: 95-100%
  • Duration: 30-45 days
  • CO2: >5000 ppm
  • Light reqs: n/a

Primordia Formation

  • Temperature: 50-60° F (10-15° C)
  • Humidity: 98-100%
  • Duration: 7-12 days
  • CO2: 500-1000 ppm
  • Light reqs: 500-600 lux
  • FAEs: 4-8 per hour

Fruit body Development

  • Temperature: 55-65° F (10-21° C)
  • Humidity: 90-95%
  • Duration: 5-10 days
  • CO2: 2000-4000 ppm
  • Light reqs: 400-600 lux
  • FAEs: 2-4 per hour



Substrates ....[edit | edit source]

This species performs best on supplemented sawdust. Good wood types are cottonwood, willow, oak, alder, beech, or elm. The effectiveness of other woods has not yet been established.[1] It seems that straw does not provide commercially viable crops unless inoculated up to 25% of its weight with sawdust spawn.

Natural Habitat[edit | edit source]

Hypsizygus tessulatus sometimes appears alone, but is usually in dense clusters of seven or more individuals; often on poplars or maple, but occasionally found on beech, birch, elm or fir; sometimes in large groups high in the crotch of a dead tree, or in smaller groups on dead stumps or logs. This species common in Pacific Northwest.

See Also[edit | edit source]

References[edit | edit source]

  1. Stamets, Growing Gourmet and Medicinal Mushrooms (Third Edition), 2000
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