Fauna
Fungus

Gunpowder Amanita

Amanita onusta

Also known as Loaded Lepidella, Gunpowder Lepidella

Gunpowder Amanita emerges from deciduous forest soils crowned with distinctive ash-gray, pyramidal warts that resemble grains of black powder. The fungus forms a deeply rooted, turnip-shaped basal bulb anchored firmly within root-dense forest litter. As a mycorrhizal partner, it weaves its underground hyphae around tree rootlets, exchanging soil nutrients for tree-derived carbohydrates throughout the summer and autumn.

WoodlandMycorrhizalDecomposer
Gunpowder Amanita reference1 / 7
(c) Brian C. Hunt, some rights reserved (CC BY) · cc-by
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Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyMycorrhizal nutrient exchange
Predators
  • Fungus gnats
  • Woodland slugs
ThreatsDeforestation and woodland habitat fragmentation
HabitatsDeciduous and mixed oak-hickory forests
Life spanSeveral days as a fruit body; perennial underground mycelium
Classification
  1. OrderAgaricales
  2. FamilyAmanitaceae
  3. GenusAmanita
  4. SpeciesAmanita onusta
Range & activity
Range data is not available yet.
Safe observation
Interaction riskHigh
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is high
Suspected toxic; many mushrooms have deadly look-alikes, so never consume wild fungi based on app identification alone.
Why it is dangerous
Members of Amanita section Lepidella frequently contain nephrotoxic amino acids that can induce acute kidney or liver damage if consumed.
How to recognize a risky encounter
Recognizable by its whitish-gray cap covered in dense, charcoal-gray pyramidal warts and a rooting, turnip-shaped bulb.
What to do
Do not harvest for culinary use; leave specimens in place to protect the local mycelial network.
Responsible observation
  • Examine Carefully: Inspect the dark, conical cap warts and deeply rooted spindle base without uprooting needlessly.
  • Photograph Details: Take clear macro photos of the cap surface, partial veil remnants, and subterranean bulb.
  • Practice Foraging Safety: Never consume wild Amanita species due to high toxicity risks and treacherous look-alikes.
Related species
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