Boletopsis gray (Boletopsis grisea)
- Division: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Class: Agaricomycetes (Agaricomycetes)
- Subclass: Incertae sedis (of uncertain position)
- Order: Thelephorales (Telephoric)
- Family: Bankeraceae
- Genus: Boletopsis (Boletopsis)
- Type: Boletopsis grisea (Boletopsis grey)
:
- Scutiger griseus
- Wrapped octopus
- Polyporus earlei
- Polyporus maximovicii
The hat is strong with a diameter of 8 to 14 cm, at first hemispherical, and then irregularly convex, with age it becomes flattened with depressions and bulges; the edge is rolled and wavy. The skin is dry, silky, matte, from brownish gray to black.
The pores are small, dense, round, from white to grayish-white in color, blackish in old specimens. The tubules are short, the same color as the pores.
The stem is strong, cylindrical, firm, narrowed at the base, the same color as the hat.
The flesh is fibrous, dense, white. When cut, it acquires a pink tint, then turns gray. Bitter taste and slight mushroom smell.
Rare mushroom. Appears in late summer and autumn; mainly grows on sandy poor soils in dry pine forests, where it forms mycorrhiza with Scotch pine (Pinus sylvestris).
An inedible mushroom due to a pronounced bitter taste that persists even after long cooking.
Boletopsis gray (Boletopsis grisea) outwardly differs from Boletopsis white-black (Boletopsis leucomelaena) in a more squat habit – its leg is usually shorter and the cap is wider; less contrasting color (it is best to judge it by adult, but not yet overripe fruiting bodies, which in both species turn very black); the ecology also differs: the gray boletopsis is confined strictly to the pine (Pinus sylvestris), and the black-and-white boletopsis is confined to the spruces (Picea). Microcharacteristics in both species are very similar.