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Amanita fulva

tawny grisett

Amanita fulva — 2024-09-12
Scientific identification
Amanita fulva Fr.
Family
Amanitaceae
Class
Agaricomycetes
Genus
Amanita

Names across languages

  • English: tawny grisett
  • German: Rotbrauner Streifling
  • Finnish: Ruostekärpässieni
  • Estonian: Kollakaspruun kärbseseen
  • Russian: Поплавок жёлто-коричневый

The scientific profile

From the latest record: 2024-09-12.

Hymenium

Gills white to creamy-white, crowded, with shorter lamellulae

Cap

Ovoid to convex when young, later broadly convex to flat with a small central umbo; tawny-orange, reddish-brown to orange-brown, usually without veil remnants; margin prominently striate

Hymenium Attachment

Free

Stipe

Slender, fragile, hollow, white to pale tawny, tapering upward and often finely fibrillose; ring absent; base enclosed in a large loose, sack-like white volva that may become stained tawny-brown

Spore print

Spore print white

Ecology

Mycorrhizal with hardwoods and conifers, especially birch, oak, chestnut, pine and spruce; alone, scattered or gregariously; forests and woodland paths; particularly acidic soils; summer to late autumn

Edibility

Edible only after thorough cooking, but not recommended due to possible toxicity when raw and dangerous confusion

Fruit body

Fruit body medium to large; stipe ~7–16 cm long and ~0.5–1.5 cm thick

Dimensions

Cap ∅ ~5–10 cm

Flesh

White, soft and relatively thin; unchanging when cut

Chemical reactions

KOH negative on cap surface

Odour

Indistinct

Taste

Indistinct

Microscopy

Spores globose to subglobose, smooth, hyaline, non-amyloid, ~9–12.5 × 9–12.5 µm; basidia predominantly 4-spored; clamp connections absent at basidia; lamellar trama bilateral

Overview

Tawny-orange ringless woodland Amanita with a striate cap margin and large sack-like volva

1815). Observ. Mycol. (Havniae) 1: 2.

Field encounters

12/Sep/24, 3:44 PM

Väike-Rõsna, Võrumaa, Estonia

Mixed forest (near birches), on ground with decaying foliage

57°59'07.6"N 27°37'28.1"E

🔆 Mild overcast, deep forest shade

Original Instagram post

Source hashtags

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