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Amanita amplivelata Hanss, Assyov, Bozok, TaŞkın & Borovička, sp. nov. (Figs. 3, 4) MycoBank 849891 Etymology:—amplus (Latin)—ample, and velum (Latin)—veil, refers to the well-developed, thick universal veil, which is characteristic for the new species. Diagnosis:— Amanita amplivelata differs from A. crocea by different colours, variable from one collection to another, viz., silvery grey, mouse grey, greyish ochraceous, buff, olivaceous, rarely whitish; by the white universal veil sometimes stained yellow ochraceous or ochraceous grey on the velar remnants of the pileus and the saccate volva; by the white floccose stipe covering, by the predominantly broadly ellipsoid basidiospores, as well as by its inferred mycorrhizal relationship with trees of Salicaceae, the genus Populus in particular. Type: — BULGARIA. Pernik province, between Trun town and Ezdimirtsi village, 42°50’07.6”N, 22°41’28.2”E, elev. ca 805 m, forest of Populus tremula and Carpinus betulus, 5 September 2020, B. Assyov (SOMF 30801!, holotype; LIP 0004524!, FBozok 1226!, isotypes; nrITS: OR524133; nrLSU: OR512418; TEF-1α: OR526520). Description:— Pileus up to 15 cm diam, at first campanulate or sometimes hemispherical, then expanding to convex, convex-applanate, in old basidiomata completely applanate or sometimes slightly depressed in the center, sometimes slightly umbonate, dry to viscid, especially in wet weather, in young basidiomata very finely rugulose, later usually more or less smooth, sometimes with an innately fibrillose pattern, pale grey (1B1, 4B1), ash grey (1B2), platinum (1–3D1), pearl grey (3B1), smoke grey (3C2), greyish beige (4C2), olive (3D3–4), ivory (4B3), brownish grey to greyish brown (7–8D2–3), usually darker in the center, somewhat paler towards margin and becoming darker again in the area of the marginal striations, occasionally entirely off-white, in some collections with iridescent or metallic shine; pileal margin striate, striations deep 1/4 to 1/3, sometimes up to 1/2 of pileal radius; velar remnants often (in ... |