Onnia tomentosa
Systematics:
- Department: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Class: Agaricomycetes (Agaricomycetes)
- Subclass: Incertae sedis (undefined)
- Order: Hymenochaetales
- Family: Hymenochaetaceae (Hymenochetes)
- Genus: Onnia (Onnia)
- Species: Onnia tomentosa (Onnia felt)
Cap: the upper surface of the cap is funnel-shaped and flat, slightly pubescent, practically not zoned. The color of the cap is yellowish brown. At the edges, the cap is thinner, lobed. When dried, it is wrapped inward, the bottom edge of the cap has a lighter color. The cap reaches 10cm in diameter. Thickness – 1cm. Fruit bodies in the form of caps with a lateral and central peduncle.
Leg: -1-4 cm long and 1.5 cm thick, the same color with the cap, pubescent.
Pulp: up to 2mm thick. The lower layer is hard, fibrous, the upper layer is softer, felt. Light yellow-brown Onnia Felt in the upper part of the leg has a light metallic shade. The tubular layer runs down to the leg up to 5 mm thick. The pores are rounded, with a pale brown surface, 3-5 pieces per 1mm of the mushroom surface. The edges of the pores are occasionally covered with a white coating.
Hymenophore: initially, the surface of the hymenophore is yellow-gray-brown with age, acquires a darker brown color.
Distribution: Found at the base of trunks and on the roots of growing trees in undisturbed mixed spruce forests. Wood-destroying mushroom, develops on the roots of larch, pine, spruce. In conifers, this fungus causes white heart rot. There is an assumption that Onnia is an indicator of the long existence of forests. Extremely rare. Rare view. Onnia Felt is included in the red lists of Latvia, Norway, Denmark, Finland, Poland, Sweden.
The mushroom is not edible.
Similarity: Onnia is easy to confuse with a two-year-old toast. The difference is the thicker and fleshy flesh of onnia, and also differs in a lighter, grayish descending hymenophore and a sterile edge in the lower part of the cap of a pale yellowish color.
Notes: Onnia tomentosa is protected in the Pechora-Ilychsky nature reserve. To preserve the populations, it is necessary to preserve old-growth forests. Identification of habitats of the species, their protection and regular monitoring are required.
Photo of the Felt Onnia mushroom from the recognition questions:
2018.12.13 Marina
