10/Oct/2025, 4:34 PM
Kadrioru park, Tallinn, Harju, Eesti
Urban park, under the oak near the roots
59°26'20.5"N 24°47'39.9"E
🌡️ 12°C 🌤️ Scattered clouds 💨 Wind 320° NW->SE, 19 km/h
Original Instagram postGrifola frondosa
hen-of-the-woods
- Scientific identification
- Grifola frondosa (Dicks.) Gray
- Family
- Meripilaceae
- Class
- Agaricomycetes
- Genus
- Grifola
Names across languages
- English: hen-of-the-woods
- German: Gemeiner Klapperschwamm
- Finnish: Koppelokääpä
- Estonian: Leht-kobartorik (CR) I
- Russian: Грифола курчавая
The scientific profile
From the latest record: 2025-10-10.
Hymenium
Pores, small and rounded when young (≈1–3/mm), becoming angular with maturity, tubes shallow (2–3 mm)
Fronds
Composed of many overlapping fan-shaped fronds, forming a rosette, wavy margins, color zones of tan, olive, gray, cream, surface tomentose to smooth
Hymenium Attachment
Poroid, decurrent across the undersides of fronds onto basal structure
Base
Short, branching, stout base from which all fronds emerge, white, compact, toughing with maturity
Spore print
Spore print white
Ecology
Weakly parasitic and saprobic on oaks roots and stumps, fruits repeatedly at same base year after year, autumn
Edibility
Choice edible when young
Description
Red List (CR) I
Uses & compounds
Immunomodulator, cyclooxygen inhibition
Description
Up to > 20 kg
Fruit body
Fruit body size clusters 10–60 cm or more across
Dimensions
Frond width ~4–10 cm
Flesh
Flesh white, firm when young, unchanging when cut, more fibrous with age
Chemical reactions
No strong reaction
Odour
Pleasant, sweet, mushroomy
Taste
Rich, nutty, older parts acrid or bland flavor
Microscopy
Spores broadly ellipsoid, smooth, inamyloid, 5–7×3.5–5 µm
Overview
Forms large, rosette-like masses of overlapping fan-shaped fronds at oak tree bases
1821). Nat. Arr. Brit. Pl. (London) 1: 643.
Field encounters
Source hashtags
#hongos #grifolafrondosa #grifola #henofthewoods #lehtkobartorik #kobartorik #koppelokääpä #gemeinerklapperschwamm #klapperschwamm #mushroomphoto #fungiphoto #fungimacro #naturephotography #seenefotod #pilzefotografieren #фотогрибов #sieniäkuvia #houby #mycology #fungistudy #mushroom #fungi #redlistfungi #medicinalfungi #ediblefungi #pilze
Back to the collection · Photography and field notes by @fungarium.info