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

Geastrum javanicum Lév.

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Scientific name
Geastrum javanicum
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
Larissa Trierveiler-Pereira
Comments etc.
Larissa Trierveiler-Pereira

Assessment Notes

Taxonomic notes

Immature basidiomata globose to subglobose, with or without a pointed apex, 1.3–2.1 cm high × 1.1–2.0 cm diam., external layer light orange to yellowish brown, velutinous due to the presence of conical fascicles of hyphae up to 0.7 cm high × 0.5 cm diam. Expanded basidiomata 1.7–2.9 cm high × 1.3–5.1 cm diam., sometimes with a short stipe up to 3.0 cm high. Exoperidium split into 5–7 rays, saccate, non-hygroscopic; mycelial layer not persistent; fbrous layer orange white, macroscopically similar to the external layer of immature basidiomata, fbrous layer hyphae more or less straight, solid or with very narrow lumen, hyaline to slightly yellowish, 3–4 μm diam.; pseudoparenchymatous layer greyish orange to brownish orange (KC 5C4) when fresh, then greyish brown when dry, pseudoparenchymatous hyphae round, yellowish, 20–45 × 23–35 μm. Endoperidium greyish brown to yellowish brown, globose, subglobose to depressed-globose, 0.7–1.7 cm high × 1.2–1.8 cm diam., sessile; peristome concolor or slightly darker than endoperidium, fbrillose, not delimited, up to 1.5 mm high. Capillitial hyphae straight to more or less sinuous, solid or with very narrow lumen, yellowish brown to olive brown, 2–7 μm diam. Basidiospores globose, brownish, with more or less columnar ornamentation, 4–5 μm diam. Growing on a white subiculum on rotten wood.

Why suggested for a Global Red List Assessment?

The species is worldwide distributed, with several records in GBIF database. We, thus, suggest this species to be categorized as Least Concern (LC).

Geographic range

Known from America, Asia and Australasia (10 countries). Disjunction distribution might indicate a complex of species.

Population and Trends

There are 347 records of this species in GBIF, most of them from Brazil (113) and Costa Rica (99).

Population Trend: Uncertain

Habitat and Ecology

Growing on rotten wood. In Brazil, the species is common, found in Atlantic Forest, Amazon Forest, Caatinga and Pampa.

Subtropical/Tropical Dry ForestSubtropical/Tropical Moist Lowland ForestSubtropical/Tropical Moist Montane ForestSubtropical/Tropical Dry ShrublandSubtropical/Tropical Moist ShrublandSubtropical/Tropical Seasonally Wet/Flooded Lowland Grassland


In Brazil, this species is well distributed. It is found in the Atlantic Forest, a hotspot, in the Amazonia (currently being deforested at the highest rates in the last decades), Caatinga (threatened with desertification) and Pampa (threatened by grazing and farming).

Housing & urban areasAgro-industry farmingAgro-industry plantationsSmall-holder grazing, ranching or farmingAgro-industry grazing, ranching or farmingMining & quarryingRoads & railroads

Conservation Actions

Reports in Brazil are mostly from protected area.

Site/area protection

Research needed

Disjunction distribution might indicate a complex of species.


Use and Trade




Country occurrence

Regional Population and Trends

Country Trend Redlisted