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Stilbotulasnella conidiophora Bandoni & Oberw.

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Scientific name
Stilbotulasnella conidiophora
Author
Bandoni & Oberw.
Common names
 
IUCN Specialist Group
Mushroom, Bracket and Puffball
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Cantharellales
Family
Incertae sedis
Assessment status
Published
Assessment date
2023-03-23
IUCN Red List Category
DD
Assessors
Susana C. Gonçalves; Susana Cunha (RBG Kew and University of Coimbrta, Portugal)
Reviewers
Gregory Mueller (Chicago Botanic Garden / IUCN SSC Mushroom, Bracket and Puffball Specialist Group)

Assessment Notes

The content on this page is fetched from The IUCN Red List of Threatened Species: https://www.iucnredlist.org/species/265979641/266019244

Justification

Stilbotulasnella conidiophora is only known from its original collection in 1979 in Hawaii 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 to be limited by the minute size of the fruitbodies. However, without further records it is not possible to estimate the population size and distribution and the species is assessed as Data Deficient (DD).

Taxonomic notes

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

Geographic range

This species is known from Honolulu in Hawaii and Chelsea, Québec in Canada (Bandoni and Oberwinkler 1982, iNaturalist 2023).

Population and Trends

Stilbotulasnella conidiophora has only been recorded at two 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: Unknown

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).

Threats

This species' threats are unknown.

Conservation Actions

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

Source and Citation

Cunha, S.P. & Gonçalves, S.C. 2025. Stilbotulasnella conidiophora. The IUCN Red List of Threatened Species 2025: e.T265979641A266019244. Accessed on 23 November 2025.

Country occurrence