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Mycena viridimarginata

olive edge bonnet

Mycena viridimarginata — 2025-09-27
Scientific identification
Mycena viridimarginata P.Karst.
Family
Mycenaceae
Class
Agaricomycetes
Genus
Mycena

Names across languages

  • English: olive edge bonnet
  • German: Grünschneidiger Helmling
  • Finnish: Meripihkahiippo
  • Estonian: Oliivmütsik
  • Russian: Мицена зелёноокаймлённая

The scientific profile

From the latest record: 2025-09-27.

Hymenium

Gills, crowded, narrow, color whitish to pale gray initially, gill edges distinctly green-tinged

Cap

Starts conical to campanulate, flattening with age, surface pruinose when young, then glabrescent, hygrophanous and radiately striate when moist, colors olivaceous-grayish-greenish-brown, margins paler

Hymenium Attachment

Narrowly adnate to adnate, occasionally with a short decurrent tooth

Stipe

Hollow, fragile; smooth to pruinose above, glabrous below, coloration yellowish-brown, darkening toward base, apex pale, base covered in whitish fibrils

Spore print

Spore print white

Ecology

Saprotrophic, growing on decaying wood of coniferous trees, summer to autumn

Description

Too small and unknown

Fruit body

Fruit body size medium, stipe 20–70 × 1–3 mm

Dimensions

Cap ⌀ ~10–40mm

Flesh

No notable color change when cut

Chemical reactions

No distinctive KOH reaction

Odour

Weakly nitrous

Taste

Slightly radish-like

Microscopy

Spores broadly subellipsoid to ovoid, smooth, amyloid; ~ 9–11.8 × 6–7.5 µm, Basidia 25–32 × 8–10 µm, slender-clavate, 4-spored, sterigmata 5–8 µm, cheilocystidia 23–70 × 7–18 (–29) µm

Overview

Delicate, somewhat slender bonnet mushroom notable for its olive-tinged gill edges

1892). Hedwigia 31: 218.

Field encounters

27/Sep/2025, 2:57 PM

Laiaküla raba, Tallinn, Harju, Eesti

Deciduous boggy forest, on decaying wet stump submerged in moss

59°28'02.9"N 24°53'25.6"E

🌡️ 14°C 🌤️ Passing clouds 💨 Wind 30° NNE->SSW, 11 km/h

Original Instagram post

Source hashtags

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