Postia tephroleuca (Fr.) Jülich, Polyporaceae, Aphyllophorales. (Постия серо-белая). Milky-white up to light grey or brownish-white flattened or crust-like mushroom Cap: 4-8cm wide, 1-2 cm thick, fan-shaped, circular or semicircular; often irregular shaped or crust-like, gentle convex or flat, milky-white up to light gray or brownish-white, yellowish-white; upper surface is smooth, sometimes uneven and somewhat bumpy, lower part is fine velvety because micro porous. Flesh: soft 0.5-1.5cm thick, somewhat elastic, white up to light gray then brownish-grey. Tubes: 2-8 long and 3-5 per 1mm; pores oval up to narrow and sometimes curved. Stalk: absent, mainly lateral fixation. Habitat: small groups or overlapped clusters at the old partially rotten stumps or trunks of deciduous woods. Edibility: no data. Season: June-September.