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Ischnoderma benzoinum

benzoin bracket

Ischnoderma benzoinum — 2024-10-12
Scientific identification
Ischnoderma benzoinum (Wahlenb.) P.Karst.
Family
Ischnodermataceae
Class
Agaricomycetes
Genus
Ischnoderma

Names across languages

  • English: benzoin bracket
  • German: Schwarzgebändelter Harzporling
  • Finnish: Tervakääpä
  • Estonian: Harilik tõrvis
  • Russian: Ишнодерма смолисто-пахучая

The scientific profile

From the latest record: 2024-10-12.

Hymenium

Pores, creamy, bruising brown, in maturity dark brown and hard, 3–4 per mm, tubes 2–4 mm deep.

Cap

Semicircular to fan-shaped, dark brown to reddish-brown, velvety when young, becoming smooth and darker with age, margin paler and wavy

Hymenium Attachment

N/A (Polypore with a pore surface)

Stipe

Absent or rudimentary, directly attached to wood

Spore print

Spore print white

Ecology

Saprobic, growing on dead coniferous wood, particularly spruce and fir, causing white rot, annual, late summer to autumn

Edibility

Inedible due to tough structure, reported edible at a young age

Fruit body

Fruit body medium to large

Dimensions

Cap 4–15 cm across, 4–6 cm deep

Chemical reactions

KOH black on cap surface and flesh

Odour

Odour pleasant, reminiscent of anise or vanilla when fresh

Microscopy

Spores allantoid, smooth, 5–7 x 1–2 µm, hyaline in KOH, inamyloid, cystidia not found

Overview

Medium to large polypore with a dark brown, velvety cap

1881). Acta Soc. Fauna Flora Fenn. 2(no. 1): 32 (’1881-1885′).

Field encounters

12/Oct/24, 1:34 PM

Soodla jõgi, Harjumaa, Estonia

Spruce-pine-juniper wooded heath, on old spruce stump

59°23'11.1"N 25°23'38.7"E

🔆 Occasional sun, partly cloudy, open spot

Original Instagram post

Source hashtags

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