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

Erythrodecton granulatum (Mont.) G. Thor

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Scientific name
Erythrodecton granulatum
(Mont.) G. Thor
Common names
IUCN Specialist Group
Assessment status
Proposed by
Isaias de Oliveira Junior
Comments etc.
Isaias de Oliveira Junior

Assessment Notes

Taxonomic notes

This species is known by its thallus with soralia, squamules c. 0.1-0.3 mm long, hypothecium hyaline, the apothecial discs are punctiform to slightly elongated (Thor, 1990). Also, there are some synonyms related to this species:
Sagedia granulata Mont., Annls Sci. Nat., Bot., sér. 3 16: 72 (1851)
Stigmatidium granulatum (Mont.) Nyl., Mém. Soc. Imp. Sci. Nat. Cherbourg 5: 132 (1857)
Leucodecton granulatum (Mont.) A. Massal., Atti Inst. Veneto Sci. lett., ed Arti, Sér. 3 5: 326 (1860)
Chiodecton granulatum (Mont.) Müll. Arg., Mém. Soc. Phys. Hist. nat. Genève 29(no. 8): 69 (1887)

Why suggested for a Global Red List Assessment?

This is species is known in 7 countries, with 35 records in GBIF database. Also, this species occurs in Tropical and Subtropical areas. In Brazil, this species records are related to Atlantic Rainforest and Amazon Rainforest, and the data isn’t current. Due to all the previous information this species might be considered as Data Deficient (DD) until a better understanding.

Geographic range

This is species is known in 7 countries. In Brazil, one occurrence to this species is known according to GBIF database.

Population and Trends

There are 35 records in GBIF database, distributed in Guyana (23 records), Congo (5 records), Panama (2 records), and the other occurrences are distributed in small percentages.

Population Trend:

Habitat and Ecology

This species is known in Tropical and Subtropical areas. In Brazil, this species can be found at the Atlantic Rainforest in Northeast of Brazil, and at the Amazon Rainforest in North of Brazil.

Subtropical/Tropical Moist Lowland ForestSubtropical/Tropical Moist Montane Forest


In Brazil, this species commonly founded in Atlantic and Amazon Rainforest that are biomes that still suffer anthropic actions in special wildfire, natural and criminal caused, and area suppression.

Tourism & 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 related to preserved areas, but unfortunately, those spaces still being affected by negatives influences. So, formal education to the population that lives near those areas and the park managers can start to change the situation.

Resource & habitat protectionHabitat & natural process restorationFormal education

Research needed

Actions that are orientated to taxonomy and exploration to new sites need to be stimulated until a better understanding of this species status.

TaxonomyPopulation size, distribution & trends

Use and Trade



Country occurrence

Regional Population and Trends

Country Trend Redlisted