Synonyme: Agaricus fascicularis; Naematoloma fasciculare.
Name: the Latin fascicularis means 'in bundles' or 'clustered'.
English:
Sulphur tuft; Sulfur tuft; Clustered woodlover.
German: Grünblättrige Schwefelkopf.
Region: northern Europe, North America; Iran, eastern Turkey.
Japanese: Nigakuritake, means "Bitter kuritake".
Habitat: woodland, on dead wood of deciduous and also coniferous trees.
Use: poisonous; to competitively displace
Armillaria solidipes, a common fungal disease of conifers.
Content: fasciculol E; fasciculol F; fasciculols; steroid depsipeptides.
MycologyThis saprophagic small gill fungus grows in large clumps on stumps, dead roots or rotting trunks of broad leaved trees. It is bitter and poisonous. The cap is hemispherical, can reach 6 cm diameter. It is smooth and sulphur yellow with an orange-brown centre and whitish margin. The crowded gills are initially yellow but darken to a distinctive green colour as the blackish spores develop on the yellow flesh. It has a purple brown spore print. The stipe is up to 10 cm tall and 1 cm wide, light yellow, orange-brown below, often with an indistinct ring zone coloured dark by the spores. The taste is very bitter.