Annual or overwintering, solitary, rarely laterally fused or imbricate, sessile, rarely resupinate-reflexed or with a decurrent base, semicircular, flat, rarely almost kidney-shaped, 3–10 cm wide and up to 1 cm thick at the base.
Cap surface zoned, concentrically furrowed, coarsely hairy to almost bristly, yellowish, creamy, ashy-gray, or grayish-olive, sometimes brownish with age. At the point of attachment, there is usually a tubercle with a noticeable greenish coloration. Closer to the margin, a light beige zone is present.
Margin of the fruit body more or less thickened, rounded, entire or wavy to lobed, or thin, sharp, sterile on the underside, usually darker in color than the rest of the cap surface. Hymenophore tubular. Surface fairly even, whitish, yellowish, brownish, or gray. Pores entire, thick-walled, round to angular, 2–4 per 1 mm.
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