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Xylaria hypoxylon

Candle-Snuff Fungus

Xylaria hypoxylon — 2026-10-11
Scientific identification
Xylaria hypoxylon (L.) Grev.
Family
Xylariaceae
Class
Sordariomycetes
Genus
Xylaria

Names across languages

  • English: Candle-Snuff Fungus
  • German: Geweihförmige Holzkeule
  • Finnish: Haarasarvisieni
  • Estonian: Sarvjas süsik
  • Russian: Ксилярия гипоксилон

The scientific profile

From the latest record: 2026-10-11.

Hymenium

Perithecia embedded in the black stromatic surface, appearing as minute pimple-like bumps with ostioles; white powdery conidia produced externally during the asexual stage

Fruit body

Erect, slender, cylindrical to flattened, often forked or antler-like; black, finely hairy near base, with conspicuous white powdery tips when young; becoming entirely charcoal-black and minutely roughened at maturity

Stipe

Short to elongated, black, tough and wiry, sometimes longitudinally grooved; base broadened and covered with dark brown to black tomentum

Description

Spore mass white from asexual conidia, dark brown to black from mature ascospores

Ecology

Saprobic, causing soft rot on decaying hardwood; fallen branches, stumps, logs and buried woody debris; scattered to densely clustered; year-round

Ecology

Inedible; tough, rubbery and insubstantial

Fruit body

Fruit body small to medium; ~2–8 cm tall and ~2–8 mm thick

Dimensions

Perithecia ∅ ~0.4–0.7 mm

Flesh

White to cream internally, solid, tough and elastic, unchanging when cut

Chemical reactions

Amyloid apical ring turning blue in Melzer's reagent

Microscopy

Ascospores ellipsoid to bean-shaped, inequilateral, smooth, brown, ~9.5–13.5 × 4.5–6 µm; asci cylindrical, 8-spored, ~140–220 µm long; conidia hyaline, smooth, narrowly fusiform-clavate, ~8.5–12 × 3.5–4 µm

Overview

Black antler-like candlesnuff fungus with distinctive white powdery tips on decaying hardwood

1824). Fl. Edin.: 355.

Field encounters

11/Oct/2026, 1:38 PM

Kloostrimets, Tallinn, Harju, Eesti

Mixed forest (pine-mapple), deep in dark bushes, on decayed wet hardwood log

59°28'08.5"N 24°50'35.4"E

🌡️ 11°C ⛅ Scattered clouds 💨 Wind 120° ESE->WNW, 13 km/h

Original Instagram post

Source hashtags

#xylariahypoxylon #mushroomphotos #fungimacro #candlesnufffungus #naturephotography

Back to the collection · Photography and field notes by @fungarium.info