Key takeaways
- Several Ganoderma species have been sold as Reishi.
- Much cultivated East Asian Reishi is now recognised as Ganoderma lingzhi.
- Naming confusion complicates research comparisons and labelling.
- Look for a named species, origin and part used.
“Reishi” sounds like a single mushroom, but the name has been applied to several species. This article explains why, and why it matters.
The genus Ganoderma
Ganoderma is a large genus of wood-decay fungi found worldwide. It includes the glossy “laccate” species associated with Reishi and duller species such as the artist’s bracket.
The naming problem
For a long time, the name Ganoderma lucidum, originally described from Europe, was applied to glossy Reishi-type fungi worldwide. DNA studies have since shown that much of the Reishi cultivated in East Asia is a distinct species, now widely called Ganoderma lingzhi. Other related species are also sold as Reishi.
Why it matters
- Research: many studies say “G. lucidum” but may have used other species, which complicates comparisons. See Reishi Research.
- Labelling: products may use a traditional name rather than the current one.
- Chemistry: different species may differ in composition.
Is all Reishi the same?
Not exactly. Related species look and are used similarly, but they aren’t identical. The label name “Ganoderma lucidum” is still widely used in the trade, including for cultivated material that may, strictly, be another species.
What to look for
- A named species on the label.
- Openness about origin and cultivation.
- The part used: fruiting body, mycelium or spores.