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

Xylobolus brasiliensis Chikowski, C.R.S. de Lira, Gibertoni & K.H. Larss.

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Scientific name
Xylobolus brasiliensis
Chikowski, C.R.S. de Lira, Gibertoni & K.H. Larss.
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
Renato Lúcio Alvarenga
Comments etc.
Renato Lúcio Alvarenga, Tatiana Gibertoni

Assessment Notes

Taxonomic notes

Xylobolus brasiliensis is characterised by resupinate to effused reflexed basidiomata often stratified in several layers, 1–2 mm thick; hymenial surface greyish brown, glabrous, smooth to slightly pilose; hyphal system monomitic to pseudodimitic due to the acanthohyphidia, vertically arranged, hyphae clamped. The acanthohyphidia are numerous in trama and hymenium, cylindrical with obtuse apex, 20–74 × 4–8 μm. Basidiospores are yellowish to brownish, subglobose to ellipsoid, 5–6(–6.5) × (3–)3.5–5 μm, slightly thick-walled, smooth in KOH 3 %, minutely ornamented in Melzer, with a lateral prominent apiculus, distinctly amyloid. Morphologically, Xylobolus brasiliensis is quite similar to X. frustulatus, but the latter has shorter acanthohyphidia (25-30 × 4-5 µm) and basidiospores (4.5-5(-5.5) × 3-3.2(-3.5) µm), rare pseudocystidia and elongated basidia (25-30 × 4-5 µm) (Crous et al. 2019).

Why suggested for a Global Red List Assessment?

Geographic range

The species is known only to Brazil.

Population and Trends

There are about 7 records of this species (Crous et al. 2019), only to Brazil.

Population Trend:

Habitat and Ecology

In Brazil, the species is know only to the Atlantic Rain Forest.

Subtropical/Tropical Moist Lowland Forest


In Brazil, this species is recorded in the Atlantic Forest, a hotspot.

Housing & urban areasAgro-industry farmingHabitat shifting & alteration

Conservation Actions

All reports are in protected areas.

Site/area protectionResource & habitat protectionSite/area management

Research needed

Other areas should be studied in order to assess the distribution of this species. Herbaria revision is also suggested, once Brazilian material identified as other Xylobolus species may represent X. brasiliensis.

TaxonomyPopulation size, distribution & trendsPopulation trends

Use and Trade




Country occurrence

Regional Population and Trends

Country Trend Redlisted