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

Clastoderma debaryanum A. Blytt

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Scientific name
Clastoderma debaryanum
A. Blytt
Common names
IUCN Specialist Group
Chytrid, Zygomycete, Downy Mildew and Slime Mould
Assessment status
Proposed by
Jaíne Parentes
Comments etc.
Jaíne Parentes, Andressa Vieira da Silva

Assessment Notes

Taxonomic notes

Clastoderma debaryanum is recognized by its small size, until 1,2mm total height, stalk brownish filled with granular material bellow, translucent and tapering abruptly upwards after a droplet-like swelling; filament of the capillitium with membranous platelets attached at the tip (Barbosa, et al., 2016).

Why suggested for a Global Red List Assessment?

Although to be a well distributed species, in Brazil this species need attention because many records are from endangered biomes. Thus, I suggest this species to be categorized in Least Concern

Geographic range

The species is known in 51 countries. In Brazil it is known in 8 of 26 states (AL, BA, PB, PE, PI, RN, SP and SC).

Population and Trends

There are about 1030 records among 51 countries, 70 of records are from Brazil.

Population Trend: Uncertain

Habitat and Ecology

In Brazil the species is found on dead leaves, decomposing trunk and living tree bark in disturbed and preserved areas, caatinga, savanna, mangrove and riparian forest and atlantic forest.

Subtropical/Tropical Moist Lowland ForestSubtropical/Tropical Mangrove Forest Vegetation Above High Tide LevelDry SavannaMoist SavanaSubtropical/Tropical Dry Shrubland


The species is well distributed in Brazil, mostly in northeast region, it is present in Biomes which have been losing its biological diversity due to deforestation, agricultural activities and urbanization.

Housing & urban areasShifting agricultureAgro-industry farmingSmall-holder plantationsAgro-industry plantationsRoads & railroadsUnintentional effects: subsistence/small scale (species being assessed is not the target) [harvest]Unintentional effects: large scale (species being assessed is not the target) [harvest]Increase in fire frequency/intensityHabitat shifting & alteration

Conservation Actions

Some records are from unprotected areas or threatened Biomes.

Site/area protectionResource & habitat protectionHabitat & natural process restoration

Research needed

More researches in Brazil are necessary, mostly in north and midwest region which has no record. Are necessary field collection and moist chamber techniques using various types of substrate.

TaxonomyPopulation size, distribution & trendsArea-based Management Plan

Use and Trade




Country occurrence

Regional Population and Trends

Country Trend Redlisted