Sulphur tuft (Hypholoma fasciculare) — yellow-green clustered caps on a stump
Poisonous

Sulphur tuft

Hypholoma fasciculare

Photo: Jörg Hempel · CC BY-SA 2.0 de · source
Habitat
Stumps, logs and buried wood of deciduous (rarely coniferous) trees; dense clusters.
Season
May–November
Verified
October 5, 2025

Identification

Dense tufts of yellow-green caps on stumps; gills sulfur-yellow → olive-black; flesh yellow and bitter. Confused with real honey fungi — see the autumn honey fungus card.

Why it is dangerous

Per clinical reports, poisoning begins 5–10 hours after eating: vomiting, diarrhea, abdominal pain. In severe cases transient paralysis and visual disturbances have been described — a picture resembling amatoxin poisoning.

How not to confuse with honey fungi

Feature Honey fungus Sulphur tuft
Gills whitish → brownish sulfur-yellow → olive-black
Flesh pale, mild yellow, bitter
Ring membranous fragile, quickly gone
Spore print white purple-brown
#poisonous#wood-decay#lookalike

Sources

  1. Wikipedia: Hypholoma fasciculare
  2. First Nature: Hypholoma fasciculare
  3. MushroomExpert.Com (M. Kuo): Hypholoma fasciculare