27/Sep/25, 2:22 PM
Läiaküla raba, Tallinn, Harju, Eesti
Decidious boggy forest, on decaying wet birch stump (with Mollisia sp. and Nemania sp.)
59°28'04.5"N 24°53'27.2"E
🌡️ 14°C 🌤️ Passing clouds. Wind 0° N->S, 13 km/h
Original Instagram postOrbilia xanthostigma
common glasscup
- Scientific identification
- Orbilia xanthostigma (Fr.) Fr.
- Family
- Orbiliaceae
- Class
- Orbiliomycetes
- Genus
- Orbilia
Names across languages
- English: common glasscup
- German: Gelbe Madenspor-Knopfbecherchen
- Finnish: Kuultomaljakas
- Estonian: -
- Russian: Орбилия желтоглазковая
The scientific profile
From the latest record: 2025-09-27.
Hymenium
Smooth under the disc, producing asci in thin hymenial layer, apothecial disc shows a glassy, translucent surface
Apothecium
Small, disc/cup-shaped apothecia, yellow to ochre, semi-transparent, shining, waxy texture
Hymenium Attachment
N/A
Stipe
Absent or extremely reduced, discs typically borne directly on wood or substrate
Spore print
Spore print N/A
Ecology
Saprobic on decaying hardwood (often with e.g. Mollisia and Nemania spp.), in moist shaded woodland, spring through autumn
Edibility
Inedible (microscopic, insubstantial)
Fruit body
Apothecium size tiny
Dimensions
Disc ~3mm diameter
Chemical reactions
No conspicuous color reactions
Odour
N/A
Taste
N/A
Microscopy
Microscopic Features:
Description
Ascospores: Ellipsoid to kidney-shaped, hyaline, size ~ 1–2 × 3–4 µm.
Hymenium
Asci: Typical operculate asci within the hymenium (standard for Orbiliaceae)
Description
Paraphyses: Present (intermixed among asci)
Overview
Tiny, bright yellow to ochre, translucent glasscup fungus growing on decaying wood.
1849). Summa Veg. Scand., Sectio Post. (Stockholm): 357.
Field encounters
Source hashtags
#hongos #orbiliaxanthostigma #orbilia #commonglasscup #sacfungi #orbiliomycetes #kuultomaljakas #gelbemadensporknopfbecherchen #knopfbecherchen #mushroomphoto #fungiphoto #fungimacro #naturephotography #seenefotod #pilzefotografieren #фотогрибов #sieniäkuvia #houby #mycology #fungistudy #mushroom #fungi #ascomycete #cupfungi #seened #pilze
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