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Arrhenia gerardiana

Gerard navel

Arrhenia gerardiana — 2025-06-07
Scientific identification
Arrhenia gerardiana (Peck) Elborne
Family
Hygrophoraceae
Class
Agaricomycetes
Genus
Arrhenia

Names across languages

  • English: Gerard navel
  • German: Gerard Torfmoos-Nabeling
  • Finnish: Rämenapalakki
  • Estonian: Gerardi samblalehik
  • Russian: Аррения Джерарда

The scientific profile

From the latest record: 2025-06-07.

Hymenium

Gills, smooth, typically pale gray-brown, decurrent to slightly decurrent, moderately spaced

Cap

Convex to shallowly umbilicate or funnel-shaped, smooth to finely tomentose, gray to brownish-gray, often scaly at the center when fresh

Hymenium Attachment

Decurrent.

Stipe

Thin, cylindrical, smooth or slightly pruinose, pale gray to brownish, sometimes with whitish basal mycelium

Ecology

Sphagnicolous—grows in association with Sphagnum mosses, found in bogs, wet heaths, and moss-rich coniferous substrates

Spore print

Spore print white

Edibility

Inedible—too small and insubstantial

Fruit body

Fruit body small; stipe generally 3–6 cm long, thin

Dimensions

Cap 1–5 cm in diameter

Odour

Faint or indistinct

Taste

Indistinct

Microscopy

Spores subglobose to ellipsoid, smooth, inamyloid, 6.8–12.4 × 3.4–5.1 µm, basidia 4-spored, ~24 × 7 µm

Overview

Small, omphalinoid gray to brownish peatland mushroom

2008). In Knudsen & Vesterholt, Funga Nordica, Agaricoid, Boletoid and Cyphelloid Genera (Gylling): 913.

Field encounters

07/Jun/25, 1:26 PM

Viru raba, Kolga, Harjumaa, Eesti

Peat bogland with pines, wet area, deep in sphagnum moss

59°27'57.3"N 25°38'45.1"E

🌡️ 18°C ⛅ Sunbreaks through clouds after some rains

Original Instagram post

Source hashtags

#sonyalpha #arrhenia #arrheniagerardiana #gerardnavel #samblalehik #omphalinoid #rämenapalakki #navel #gerardtorfmoosnabeling #torfmoosnabeling #mushroomphoto #fungiphoto #fungimacro #naturephotography #seenefotod #pilzefotografieren #фотогрибов #sieniäkuvia #forestwalk #mycology #fungistudy #mushroomhunt #mushroom #fungi #hygrophoraceae #bogfungi #seened #pilze

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