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

Stilbotulasnella conidiophora Bandoni & Oberw.

Search for another Species...

Scientific name
Stilbotulasnella conidiophora
Bandoni & Oberw.
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Incertae sedis
Assessment status
Under Assessment
Proposed by
Catia Canteiro
Susana P. Cunha, Susana C. Gonçalves
Comments etc.
Catia Canteiro

Assessment Notes


Stilbotulasnella conidiophora is only known from its original collection in 1979 in Hawai and a more recent iNaturalist observation in 2021 in Canada. The geographical distance between both observations is suggestive of a wide distribution, and the number of records is likely very limited by the minute size of the fruitbodies. However, without further records it is not possible to estimate population size and distribution and the species is assessed as Data Deficient (DD).

Taxonomic notes

Type species of the monotypic genus Stilbotulasnella, created based on its distinct morphological characteristics (Bandoni and Oberwinkler, 1982).

Why suggested for a Global Red List Assessment?

Geographic range

Known from Honolulu in Hawai and Chelsea, Québec in Canada (Bandoni and Oberwinkler, 1982; iNaturalist, 2023).

Population and Trends

S. conidiophora has only been recorded in 2 sites, but since its fruitbodies are extremely inconspicuous (around 0.2 to 0.3 mm) and observations were made in distant regions, the number of locations is likely much larger. Nevertheless, without targeted search efforts it is not possible confirm if this species is under sampled or rare.

Population Trend: Uncertain

Habitat and Ecology

Specimens in Hawaii were found on a decaying palm frond and specimens from Canada were growing on bark of dead hardwood (Bandoni and Oberwinkler, 1982; iNaturalist, 2023).


Conservation Actions

Research needed

More research and search efforts are needed to determine distribution and population size for this species.

TaxonomyPopulation size, distribution & trendsLife history & ecologyThreats

Use and Trade


Country occurrence

Regional Population and Trends

Country Trend Redlisted