• Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Arthothelium spectabile A. Massal.

Search for another Species...

Scientific name
Arthothelium spectabile
A. Massal.
Common names
IUCN Specialist Group
Incertae sedis
Assessment status
Proposed by
Isaias de Oliveira Junior
Comments etc.
Isaias de Oliveira Junior

Assessment Notes

Taxonomic notes

This species is well-known by its crustose thallus, black ascomata prominent non-pruinose, and the presence of a muriform ascospore.

Why suggested for a Global Red List Assessment?

Worldwide this species is encountered, but it’s more related to North America due to the numbers of records. With more than 800 occurrences this can be classified as Least Concern. However, to Brazil, this species might be classified as Data Deficient due to the lack of records.

Geographic range

This is species is known in 30 countries. In Brazil, only one occurrence to this species is known located in the Northeast of Brazil according to GBIF database.

Population and Trends

There are 847 records in GBIF database, where 495 records to the United States of America, 74 to Canada, 51 to Mexico, and the other records are distributed in small percentages to the other countries.

Population Trend:

Habitat and Ecology

This species is related to Temperate Forest, Boreal Forest, Montane and Dry Tropical Forests. In Brazil, This species can be found in the Atlantic Rainforest.

Boreal ForestTemperate ForestSubtropical/Tropical Dry ForestSubtropical/Tropical Moist Montane Forest


Even knowing that one record is related to Brazil, this species can be found in the Atlantic Rainforest. Also, the Atlantic Rainforest still suffers anthropic actions, so this species diversity is under unnatural pressure.

Housing & urban areasTourism & recreation areasSmall-holder farmingAgro-industry farmingSmall-holder plantationsAgro-industry plantationsRoads & railroadsUnintentional effects (species being assessed is not the target)Increase in fire frequency/intensityHabitat shifting & alteration

Conservation Actions

In Brazil, the records are correlated to preserved areas that still affected by natural and unnatural influences, so formal education to the population that lives near those areas and the park managers can help to endorse the urge to effective preservation to those areas.

Site/area protectionResource & habitat protectionHabitat & natural process restorationFormal education

Research needed

Due to the scarcity of records related to Brazil, new areas might be investigated to a better understanding of its population size and patters in the Atlantic Rainforest.

TaxonomyPopulation size, distribution & trends

Use and Trade



Country occurrence

Regional Population and Trends

Country Trend Redlisted