- Scientific name
- Bryoclavula phycophila
- Author
- H. Masumoto & Y. Degawa
- Common names
-
- IUCN Specialist Group
Lichens
- Kingdom
- Fungi
- Phylum
- Basidiomycota
- Class
- Agaricomycetes
- Order
- Cantharellales
- Family
- Incertae sedis
- Assessment status
-
Published
- Assessment date
- 2023-02-06
- IUCN Red List Category
-
DD
- Assessors
- Susana C. Gonçalves; Susana Cunha (RBG Kew and University of Coimbrta, Portugal)
- Reviewers
- Christoph Scheidegger (IUCN SSC Lichen Specialist Group)
Assessment Notes
Justification
Bryoclavula phycophila is a lichenized basidiomycete described from Japan in 2020, where it has been found in two locations. More records or search efforts are needed to determine the population size and distribution. The species is assessed as Data Deficient (DD).
Taxonomic notes
Bryoclavula phycophila is the type species of the monotypic genus
Bryoclavula, described in 2020 using morphological and phylogenetic data (Masumoto and Degawa 2020).
Geographic range
This species is known from the Kumamoto and Nagano (not mapped) Prefectures in Japan (Masumoto and Degawa 2020, 2021).
Population and Trends
Bryoclavula phycophila has only been found in two sites in Japan. It is possible that its small size (less than 5mm) and possible confusion with other species (e.g in the genus Multiclavula) has limited the number of observations for this species, making it difficult to determine whether this species is uncommon or overlooked.
Population Trend: Unknown
Habitat and Ecology
Bryoclavula phycophila is a lichenized fungus, growing in association with green algae. I has been found on bryophyte covered rocks in a canyon boardwalk side slope and growing directly from a stone on an unpaved forest road, in winter and autumn respectively (reported by Dr. Masumoto).
Threats
This species' threats are unknown.
Conservation Actions
Targeted search efforts are needed to estimate the population size and distribution.
Source and Citation
Cunha, S.P. & Gonçalves, S.C. 2025. Bryoclavula phycophila. The IUCN Red List of Threatened Species 2025: e.T265976049A266018322. Accessed on 22 November 2025.