Fauna
Fungus · GBIF taxon 8338709

False Caesar's Mushroom

Amanita parcivolvata

Also known as Ringless False Fly Amanita, False Caesar

False Caesar's Mushroom stands out in eastern North American oak forests with its vivid red to orange-yellow cap flecked with bright yellow veil remnants. Unlike true Caesar's mushrooms, this species completely lacks a ring on its stem and bears pale yellow gills rather than stark white ones. It forms mycorrhizal relationships primarily with oaks and pines, fruiting after warm summer rains.

Bright Red CapForest FungusMycorrhizal
False Caesar's Mushroom reference1 / 7
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—observations
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—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & prey
  • Mycorrhizal (symbiotic with tree roots)
Predators
  • Fungus gnats
  • Slugs
  • Squirrels
ThreatsHabitat destruction and extreme drought
HabitatsDeciduous and mixed forests, especially oak and pine woodlands
Life spanFruiting body lasts 3–7 days; underground mycelium persists perennially
Classification
  1. OrderAgaricales
  2. FamilyAmanitaceae
  3. GenusAmanita
  4. SpeciesAmanita parcivolvata
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
Contains toxins causing severe illness; wild mushrooms have dangerous look-alikes, never ingest.
Why it is dangerous
Contains muscarinic and ibotenic acid-like toxins that cause severe gastrointestinal distress and neurological symptoms if ingested.
How to recognize a risky encounter
Look for a bright orange-red cap with yellow powdery patches, yellow gills, and an unringed stalk rising from a minimal volva.
What to do
Observe and photograph in place without consuming, and wash hands after handling wild fungi.
Responsible observation
  • Check the Stem: Look carefully at the upper stem to confirm the absence of an annulus or ring.
  • Inspect the Gills: Note the pale yellow to creamy orange color of the gills under the cap.
  • Observe Habitat: Look for this mushroom growing near oak and pine roots in mid to late summer.
Related species
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