Repetobasidiellum fusisporum is an obligate fern fungus known from several countries. Its host range is widespread and there are no known threats toward this species or its host species. There is no data indicating population decline. We recommend this species be assessed as least concern (LC).
Why suggested for a Global Red List Assessment?
This species has been described from several countries. It has been identified as an obligate fungus growing on different types of ferns (Erikkson, J., 1981), especially the rachides (Yurchenko, E., 2006). It is likely this species is more widespread in northern Europe (Erikkson, J., 1981), but may also be generally widespread due to its host range.
Population and Trends
There is no current information on the population size or distribution trends of this species. However, it is likely widespread within its host range (He et al, 2019).
Population Trend: Uncertain
Habitat and Ecology
This species is only known from growing on fern fronds and commonly on Matteuccia (Erikkson, J., 1981). It is described as having greyish-brown uniform, ceraceous fruiting bodies with densely interwoven hyphae (Erikkson, J.,1981).