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Lentinus arcularius

spring polypore

Lentinus arcularius — 2025-09-21
Scientific identification
Lentinus arcularius (Batsch) Zmitr.
Family
Polyporaceae
Class
Agaricomycetes
Genus
Lentinus

Names across languages

  • English: spring polypore
  • German: Weitlöcheriger Stielporling
  • Finnish: -
  • Estonian: -
  • Russian: Пилолистник ларцевидный

The scientific profile

From the latest record: 2025-09-21.

Hymenium

Pores large, angular to hexagonal, whitish to pale cream becoming light brown with age

Cap

Convex to depressed center, surface dry, scaly to fibrillose, color from dark brown in youth to pale tan, margin with fine hairs/cilia

Hymenium Attachment

Poroid, decurrent on stipe

Stipe

Central, matching or slightly paler than cap, dry and scaly, tough in texture

Spore print

Spore print creamy white

Ecology

Saprobic on deciduous hardwoods (fallen logs, stumps, branches), spring to autumn

Ecology

Inedible, too small, tough, and insubstantial

Fruit body

Fruit body small, stipe 2–6 cm × ~1.5–4.5 mm

Dimensions

Cap 1–8 cm

Chemical reactions

KOH — negative

Odour

Slight, indistinct

Taste

Indistinct, woody

Microscopy

Spores cylindrical to narrowly ellipsoid, smooth, ~5.0–8.5×1.5–2.5µm, hyaline in KOH, basidia 2- to 4-sterigmate, no cystidia, pileipellis radial cutis of brown, clamped hyphae 4–7 µm wide, dimitic

Overview

Small polypore bears a scaly, brown cap and decurrent large pores surface

2010). International Journal of Medicinal Mushrooms (Redding) 12(1): 88.

Field encounters

21/Sep/25, 3:16 PM

Kõrveküla, Lääne-Viru, Eesti

Heath area with deep bushes, on dry hardwood branch

59°14'10.2"N 25°39'26.3"E

🌡️ 21°C ☀️ Sunny. Wind 200° SSW->NNE, 20 km/h

Original Instagram post

Source hashtags

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