Sulfur-yellow false foam (Hypholoma fasciculare) photo and description

Sulfur-yellow false foam (Hypholoma fasciculare)

  • Department: Basidiomycota (Basidiomycetes)
  • Subdivision: Agaricomycotina (Agaricomycetes)
  • Class: Agaricomycetes (Agaricomycetes)
  • Subclass: Agaricomycetidae (Agaricomycetes)
  • Order: Agaricales (Agaric or Lamellar)
  • Family: Strophariaceae (Strophariaceae)
  • Genus: Hypholoma (Gifoloma)
  • Species: Hypholoma fasciculare (Sulfur-yellow false foil)
    Other names for the mushroom:
  • Sulfur-yellow honey fungus


Sulfur-yellow honey fungus

False Foam sulfur yellow

The sulfur-yellow false foil (Latin Hypholoma fasciculare ) is a poisonous mushroom from the genus Hypholoma of the Strophariaceae family.

Sulfur-yellow false foam grows on stumps, on the ground near stumps and on rotten deciduous and coniferous wood. It is often found in large groups.

The cap is 2-7 cm in ∅, first bell-shaped , then prostrate , yellowish, yellow-brown, sulfur-yellow, lighter along the edge, darker or reddish-brown in the center.

The pulp is light yellow or whitish , very bitter, with an unpleasant odor.

The plates are frequent, thin, adherent to the stem, first sulfur-yellow, then greenish, black-olive. Spore powder chocolate brown. Spores are ellipsoidal, smooth.

Leg up to 10 cm in length, 0.3-0.5 cm ∅, smooth, hollow, fibrous, light yellow.

Sulfur-yellow honey mushroom

Spore powder:

Purple brown.


Sulfur-yellow pseudo-froth is ubiquitous from late May to late autumn on rotting wood, on stumps and on the ground near stumps, sometimes on the trunks of living trees. Prefers deciduous species, but occasionally it can also be found on conifers. It usually grows in large groups.

Similar species:

The greenish color of the plates and the cap makes it possible to distinguish this mushroom from most of the so-called "honey agarics". Gray lamellar honey fungus (Hypholoma capnoides) grows on pine stumps, its plates are not greenish, but gray.


The sulfur-yellow pseudo-foam is poisonous . When eaten after 1-6 hours, nausea, vomiting, sweating appear, the person loses consciousness.

Video about the mushroom False foil sulfur-yellow:


I believe that at the competition of the most ordinary-looking mushrooms, the sulfur-yellow mushroom (or false foam) will never win the main prize: it will not be possible to attract the attention of the jury.