Ganoderma tsugae

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Ganoderma tsugae
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Polyporales
Family: Ganodermataceae
Genus: Ganoderma
G. tsugae
Binomial name
Ganoderma tsugae
Ganoderma tsugae
View the Mycomorphbox template that generates the following list
Pores on hymenium
Cap is flat
Hymenium is adnate
Stipe is bare
Spore print is brown
Ecology is saprotrophic or parasitic
Edibility is inedible

Ganoderma tsugae, also known as hemlock varnish shelf, is a flat polypore mushroom of the genus Ganoderma.


In contrast to Ganoderma lucidum, to which it is closely related and which it closely resembles, G. tsugae tends to grow on conifers, especially hemlocks.[1]


Like G. lucidum, G. tsugae is non-poisonous but generally considered inedible,[2] because of its solid woody nature; however, teas and extracts made from its fruiting bodies supposedly allow medicinal use of the compounds it contains, although this is controversial within the scientific community. A hot water extraction or tea can be very effective for extracting the polysaccharides; however, an alcohol or alcohol/glycerin extraction method is more effective for the triterpenoids.[3]

The fresh, soft growth of the "lip" of G. tsugae can be sautéed and prepared much like other edible mushrooms. While in this nascent stage it is not woody, it can still be tough and chewy.


Like G. lucidum, G. tsugae is purported to have medicinal properties including use for dressing a skin wound.[4] Though phylogenetic analysis has begun to better differentiate between many closely related species of Ganoderma;[5] there is still disagreement as to which have the most medicinal properties. Natural and artificial variations (e.g. growing conditions and preparation) can also effect the species' medicinal value.[citation needed]

Studies in mice have shown that G. tsugae shows several potential medicinal benefits including anti-tumor activity through some of the active polysaccharides found in G. tsugae.[6][7] G. tsugae has also been shown to significantly promote wound healing in mice as well as markedly increase the proliferation and migration of fibroblast cells in culture.[8]


  1. ^ ). Retrieved June 15, 2007.
  2. ^ Meuninck, Jim (2017). Foraging Mushrooms Oregon: Finding, Identifying, and Preparing Edible Wild Mushrooms. Falcon Guides. p. 56. ISBN 978-1-4930-2669-2.
  3. ^ Gary Emberger, Messiah College, Ganoderma tsugae, 2006. Retrieved June 16, 2007.
  4. ^ Ching-Hua Su1, et al., Taipei Medical University, Sacchachitin, a Skin Wound Dressing Material from Ganoderma tsugae Archived 2007-07-17 at the Wayback Machine, 2004. Retrieved June 16, 2007.
  5. ^ Soon Gyu Hong, Hack Sung Jung, Phylogenetic analysis of Ganoderma based on nearly complete mitochondrial small-subunit ribosomal DNA sequences, Mycologia July/August 2004 vol. 96 no. 4 742–55.
  6. ^ Mizuno T, Wang G, Zhang J et al: Reishi, Ganoderma lucidum and Ganoderma tsugae: bioactive substances and medicinal effects. Food Rev Intl 1995; 11(1):151-166
  7. ^ Mayuzumi I, Okamoto H & Li J: Antitumor active protein-containing glycans from the Chinese mushroom songshan lingzhi, Ganoderma tsugae mycelium. Biosci Biotechnol Biochem 1994; 58(7):1202-1205.
  8. ^ Su CH, Sun CS, Juan SW et al: Development of fungal mycelia as skin substitutes: effects on wound healing and fibroblast. Biomaterials 1999; 20(1):61-68.