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

Anisomeridium americanum (A. Massal.) R.C. Harris

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Scientific name
Anisomeridium americanum
(A. Massal.) R.C. Harris
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 characterized by its white - grey thallus with black perithecia having a lateral ostiole, and ascospores granular ornamented.

Why suggested for a Global Red List Assessment?

Due to lack of records and also the geographic distance between the existent records this species might be considered as Near Threatened (NT).

Geographic range

This is species is known in 10 countries. In Brazil, only seven occurrences to this species are knowing mostly located in the Northeast and Southeast of Brazil according to GBIF database.

Population and Trends

There are 53 records in GBIF database, where 20 records to Puerto Rico, 7 to Brazil, 6 to Australia, 6 to Costa Rica, and the other records are distributed in small percentages to the other countries.

Population Trend:

Habitat and Ecology

This species is related to Tropical Forest, Tropical Savanah, and Tropical Rainforest. In Brazil, This species can be found in the Atlantic Rainforest.

Subtropical/Tropical Dry ForestSubtropical/Tropical Moist Lowland ForestSubtropical/Tropical Moist Montane Forest


In Brazil, due to this species related biomes, Atlantic Rainforest and Amazon Forest, that suffer anthropic actions, this species is exposed to natural and human-caused factors that rule its diversity and abundance.

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, but unfortunately, those spaces still affected by natural and unnatural influences. Formal education to the population that lives near those areas and the park managers can be a start to change the situation.

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

Research needed

Since the number of occurrences is low, compared to other species, new research that explore new areas can help to increase the number of records, and lead to a better understanding of its distribution and trends patters.

TaxonomyPopulation size, distribution & trends

Use and Trade



Country occurrence

Regional Population and Trends

Country Trend Redlisted