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

Diorygma hieroglyphicum (Pers.) Staiger & Kalb

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Scientific name
Diorygma hieroglyphicum
(Pers.) Staiger & Kalb
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 white to off-white or pale greenish-white thallus, numerous and immersed to semi-immersed lirellae, 1- spore per ascus, hyaline, muriform (Kalb et al., 2004).

Why suggested for a Global Red List Assessment?

This is species is known in 19 countries, with 289 records in GBIF database. Also, this species occurs in Pantropical, Neotropical, and well in Tropical to Subtropical coastal rainforest areas. In Brazil, this species records are related to Atlantic Rainforest and Amazon Rainforest. Due to all the previous information this species might be considered as Least Concern (LC) until a better understanding.

Geographic range

This is species is known in 33 countries. In Brazil, 30 occurrences to this species are known, located in South, Southeast, Midwest, North and Northeast of Brazil according to GBIF database.

Population and Trends

There are 289 records in GBIF database, distributed in The United States of America (88 records), Australia (39 records), Brazil (30 records), and the other occurrences are distributed in small percentages.

Population Trend:

Habitat and Ecology

This species occurs in Pantropical and Neotropical areas, and also in Tropical to Subtropical coastal rainforest. In Brazil, this species can be found at the Atlantic Rainforest in Northeast, Midwest, South and Southeast of Brazil, and at the Amazon Rainforest in North of Brazil.


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