• Proposed
  • Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Ramariopsis lentofragilis (G.F. Atk.) R.H. Petersen

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Scientific name
Ramariopsis lentofragilis
(G.F. Atk.) R.H. Petersen
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Under Assessment
Proposed by
Jean Berube
Jean Berube
Comments etc.
Anders Dahlberg

Assessment Notes

Possibly Data Deficient (DD)

Taxonomic notes

Why suggested for a Global Red List Assessment?

Very rare species with seven record in NA.

Geographic range

-seven record in NA
-Nova Scotia twice in 1959
-Idaho 1968
-Tennessee 1973
-Maine 1986
-Quebec. One station, 2008, 2009
-very rare

Population and Trends

This species is not easy to recognize, hence vastly undersampled. With seven record in 6 localities in North America since 55 years, we believe it is un collected and often overlook during identification sessions. Thereofre the number of localities may be up to 100 times higher, so we estimate is to be found in 600 localities. This estimate corresponds to 1200 genetically unique mycelia. The number of ramets are expected to be 10 times higher, so total number of individual worldwide is estimated to be 12000.  Technically we could propose Near Threatened (NT) C2(ai) if it was shown to be declining, but we prefer to raise awareness on its existance and propose Data Deficient (DD).

Population Trend: Uncertain

Habitat and Ecology

Rotten wood.

Temperate Forest


Nitrogen deposition from industrial and transport activities could affect its habitat or this species directly.

Conservation Actions

Research needed

Better morphological characters to allow easy field identification.
In northeastern North America, where this species is found, there are numerous groups of amateur mycologists. Members of these groups can be recruited and instructed where to find and how to identify this species so they can target this species during forays. Data from amateur mycologists can be critical to define its population size, distribution and trends.

Use and Trade


Country occurrence

Regional Population and Trends

Country Trend Redlisted