- Scientific name
- Xylaria nigromedullosa
- Author
- Trierv.-Per. & A.I. Romero
- Common names
-
- IUCN Specialist Group
Cup-fungi, Truffles and Allies
- Kingdom
- Fungi
- Phylum
- Ascomycota
- Class
- Sordariomycetes
- Order
- Xylariales
- Family
- Xylariaceae
- Assessment status
-
Published
- Assessment date
- 2024-02-26
- IUCN Red List Category
-
DD
- Assessors
- Trierveiler-Pereira, L., Costa-Rezende, D.H., Baltazar, J., Canêz, L., Monteiro, M., Calaça, F. & Alves-Silva, G.
- Reviewers
- Drechsler-Santos, E.R., Martins da Cunha, K. & Minter, D.
Assessment Notes
Justification
This lignicolous
Xylaria species is probably a rare species, since it was found only once in a fragment of Atlantic Forest in southern Brazil. The species is conspicuous, however, there are few specialists working on taxonomy of non-lichenized ascomycetes in Brazil. Despite this, the species' first author has been collecting macrofungi in southern Brazil for more than fifteen years and found the species only once. Additionally, the southern Atlantic Forest is one of the most sampled regions in Brazil, with accumulated sampling effort from several mycologists throughout decades. Therefore, this might indicate that the species is rare. Also, as a saprophytic species known only from the type specimen it is difficult to understand its environmental requirements and, consequently, not possible to have an approximation of its population size and trends. More data are necessary to better understand the species' ecology and distribution. Based on lack of reasonable data, at this time the species is assessed as Data Deficient.
Taxonomic notes
Xylaria nigromedullosa was described in 2009 based on a specimen collected in a fragment of Atlantic Forest from southern Brazil, State of Santa Catarina (Trierveiler-Pereira
et al. 2009). No synonyms are recorded for the species.
Geographic range
Xylaria nigromedullosa is currently only known from the type locality, a remnant of the Atlantic Forest near the coast (dense ombrophilous forest lowlands), in the State of Santa Catarina, southern Brazil.
Population and Trends
Xylaria nidromedullosa is known from only one site in southern Brazil, its type locality, which is not currently protected by any conservation unit. The population size of this species is difficult to assess since it is only known from the original publication, hindering the construction of reliable estimates. The type collection is composed of six stromata from the same piece of rotten wood. The species is conspicuous, however, there are few specialists working on taxonomy of non-lichenized ascomycetes in Brazil. Despite this, the species' first author has been collecting macrofungi in southern Brazil for more than fifteen years and found the species only once. Additionally, the Southern Atlantic Forest is one of the most sampled regions in Brazil, with accumulated sampling effort from several mycologists throughout decades. Therefore, this might indicate that the species is rare. Also, as a saprophytic species known only from the type specimen it is difficult to understand its environmental requirements and, consequently, difficult to make an approximation of its population size and trends.
Population Trend: unknown
Habitat and Ecology
Xylaria nigromedullosa is a saprotrophic species that grows on dead wood. Its known distribution is restricted to the type locality, an insular remnant of Atlantic Rainforest (dense ombrophilous forest). Its specific habitat and ecology are uncertain.
Threats
Where the type collection of
Xylaria nigromedullosa was collected the main threats are: urban expansion; real estate speculation in coastal areas; tourism; pollution from the disposal of garbage and even effluents; deforestation (e.g. for logging and agriculture) and fires; vehicle traffic; and the presence of exotic plant species.
Conservation Actions
The main action needed to preserve the species is the protection of its type locality habitat and creation of new conservation areas to harbour the probable microhabitats to which the Atlantic Forest may be restricted in the future. Also, measures must be taken to ensure that the protected Atlantic Forest areas reach a mature state.
Since the species is only known from the type collection, more studies are necessary to investigate where
Xylaria nigromedullosa occurs, to estimate its population, distribution and trends. In Brazil, it is argued that there is a need for more taxonomists to be trained to study non-lichenized ascomycetes.
Use and Trade
There are no reported uses.
Source and Citation
Trierveiler-Pereira, L., Costa-Rezende, D.H., Baltazar, J., Canêz, L., Monteiro, M., Calaça, F. & Alves-Silva, G. 2024. Xylaria nigromedullosa. The IUCN Red List of Threatened Species 2024: e.T266357751A266357807. .Accessed on 29 October 2024