Broken fiber (Inocybe lacera)
- Division: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Class: Agaricomycetes (Agaricomycetes)
- Subclass: Agaricomycetidae (Agaricomycetes)
- Order: Agaricales (Agaric or Lamellar)
- Family: Inocybaceae (Fibrous)
- Genus: Inocybe (Fiber)
- Type: Inocybe lacera (torn fiber)
Fiber torn (lat. Inocybe tears) is a poisonous mushroom from the Volokonnitse family (lat. Inocybe).
It grows in damp woods along the edges of roads and ditches in July-September.
Cap 2-5 cm in ∅, , , with a tubercle in the center, finely scaly, yellow-brown or light brown, with a white flocculent edge.
The pulp of the cap, the pulp of the leg, the smell is very weak, the taste is sweetish at first, then bitter.
The plates are wide, adherent to the stem, brownish-brown with a white edge. Spore powder is rusty-brown. Spores are elongated-ellipsoid, unequal-sided.
Leg 4-8 cm long, 0,5-1 cm ∅, dense, straight or curved, brown or reddish, with reddish-brown fibrous scales on the surface.
The mushroom is deadly poisonous. Symptoms of poisoning, as with the use of Patuillard fiber.