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Scleroderma areolatum

leopard earthball

Scleroderma areolatum — 2025-08-03
Scientific identification
Scleroderma areolatum Ehrenb.
Family
Sclerodermataceae
Class
Agaricomycetes
Genus
Scleroderma

Names across languages

  • English: leopard earthball
  • German: Leopardenfell-Hartbovist
  • Finnish: Ruutumukulakuukunen
  • Estonian: Leopard-murukera
  • Russian: Ложнодождевик пятнистый

The scientific profile

From the latest record: 2025-08-03.

Hymenium

Internal gleba: initial whitish-flesh, turning dark violet-black or olive-brown and powdery at maturity, ruptures irregularly at the apex

Cap

No cap; fruit bodies globose to subglobose, peridium thin (<1mm), yellowish-cream turning ochre brown, with distinctly small brown scales

Hymenium Attachment

N/A

Stipe

With a short whitish pseudostipe with white rhizomorphs present, base often root-like

Spore print

Spore print dark purplish-black to olive-brown through maturation

Ecology

Ectomycorrhizal with oaks, on damp, clay-rich soils in mixed woodlands, garden edges, mossy margins, open woodland litter, in small groups from summer through autumn

Edibility

Poisonous—may cause vomiting, profuse sweating, collapse, and fainting

Fruit body

Fruit body 1-5 cm across, pseudostipe ≤2cm when present

Chemical reactions

Surface turns red to reddish-brown or dark red upon application of 5% KOH

Odour

Faint, slightly sweet

Taste

Bitter or indistict

Microscopy

Globose to subglobose, dense spines (1-2µm), 11-15µm diameter, not reticulate, inamyloid, pale yellow-brown in KOH

Overview

Small, terrestrial earthball with a tough yellow rind flecked in small brown scales forming a leopard-like pattern

1818). Sylv. Mycol. Berol. (Berlin): 27.

Field encounters

03/Aug/25, 4:25 PM

Keila-Joa õpperada, Meremõisa, Harjumaa, Eesti

Park near waterfall, Oak trees, in clay soil with moss

59°23'43.7"N 24°17'38.8"E

🌡️ 26°C ⛅ Hot sun and rain clouds

Original Instagram post

Source hashtags

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