Amber amanita (Amanita fulva)
Index Fungorum Amanita fulva Fr.
MycoBank Amanita fulva Fr.
Reddish-brown poplavok, brown poplavok, yellow-brown fly agaric, orange fly agaric.
From Latin fulvus – brown, reddish, red-yellow.
Agaricus fulvus Schaeff., Fung. bavar. palat. nasc. (Ratisbonae) 4: 41 (1774)
Agaricus vaginatus var. fulvus (Schaeff.) Romell, in Krok & Almquist, Svensk Flora för skolor, II. Kryptogamer (edn 2) (Stockholm): 159 (1898)
Amanita fulva f. alba (Courtec.) Contu, Docums Mycol. 17(no. 65): 62 (1986)
Amanita vaginata f. fulva (Fr.) Veselý, Annls mycol. 31(4): 278 (1933)
Amanita vaginata var. fulva (Fr.) Gillet, Hyménomycètes (Alençon): 51 (1874) [1878]
Amanitopsis fulva (Fr.) Henn., Bot. Jb. 31: 738 (1901)
Amanitopsis fulva f. alba Courtec., Miscell. Mycologica, Cercle de Mycologie de Mons 14: 8 (1986)
Amanitopsis vaginata var. fulva (Fr.) Sacc., Syll. fung. (Abellini) 5: 21 (1887)
Vaginata fulva (Fr.) A.H. Sm., Mushrooms in their natural habitats: 396 (1949)
9 – 12 cm, initially ovoid with curved margin, gradually unfolding to convex and finally flat with low umbo, colored orange- or rust-brown, usually darker in center (up to dark brown). Margin distinctly striated. Surface smooth, slightly sticky and slippery when moist, shiny.
Gills free, crowded, white or yellowish, up to 6 mm wide; gill margin even, light.
Height 8 – 15 cm, diameter 6 – 20 mm, narrowing upward, hollow inside, without ring in upper part, with volva at base, white, dirty-white or with dirty-orange surface tint.
Volva sac-shaped, free, fairly elastic, leathery. Inside white, outside often covered with characteristic rust-colored spots consisting of resinous masses that form when destroying hyphae of volva surface. Veil remnants on cap usually absent.
Fragile, white, color does not change on breaking, with weak smell and pleasant taste.
Spore print white. Spores 9 × 12 µm, spherical or nearly spherical (rarely broadly ellipsoid), non-amyloid.
Forms mycorrhiza with birch and other trees, inhabits mixed and coniferous forests on acidic soils, often in wet, swampy areas, found also in steppe zone. Widely distributed in temperate climate of Eurasia. Fruit bodies appear singly or in small groups.
Not listed in the Red Data Book of RF and regions.
In forests with birch presence, yellowing poplavok (Amanita flavescens) occurs, which differs by lighter, beige cap coloration and more "clean" volva almost free of rust spots.
A. fulva can be confused with umbral-yellow poplavok (Amanita umbrinolutea), which also prefers mainly coniferous taiga forests, but differs by distinctly zonal cap coloration without rust tones, colored gill margins and brownish mottled pattern on stem.
In European part of the country a little-studied species birch poplavok (Amanita betulae) was recorded, apparently also forming mycorrhiza with birch, which differs from A. fulva by less bright cap coloration and frequent presence of large veil fragment on caps of mature mushrooms, as well as ecology, preferring wet, swampy forest areas.
Add new comment