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

Byssoloma vanderystii Sérus.

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Scientific name
Byssoloma vanderystii
Common names
IUCN Specialist Group
Assessment status
Proposed by
Isaias de Oliveira Junior
Comments etc.
Isaias de Oliveira Junior

Assessment Notes

Taxonomic notes

This is a foliicolous lichen species known by its sessile to adnate brown apothecia, by the presence of a reddish brown marginal zone and 7- septate hyaline ascospores.

Why suggested for a Global Red List Assessment?

There are 11 records distributed in five different countries, and in Brazil, this species is encountered only in remnants of tropical rainforest that remains suffering deforestation. So, this species might be considered as Vulnerable.

Geographic range

This species is known in 5 different localities, specially related to the Pantropical area. In Brazil, 5 records to this species are known located in the Northeast of Brazil according to GBIF database.

Population and Trends

There are 11 records in GBIF database, distributed in Brazil (4 records), Congo (4 records), Australia (1 record), Colombia (1 record ) and Vietnam (1 record).

Population Trend:

Habitat and Ecology

This species is related to Pantropical. In Brazil, This species can be found at the Atlantic Rainforest.

Subtropical/Tropical Moist Lowland ForestSubtropical/Tropical Moist Montane Forest


In Brazil, this species can be founded in Atlantic Rainforest that is a biome that still suffers 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 correlated 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.

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

Research needed

The certainty pattern distribution and abundance remain unknown, so 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