Pholiotina rugosa (Peck) Singer 1948
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Descriptions
Pileus 27 mm, hemispheric, becoming convex to subcampanulate, golden tawny brown, sienna or cinnamon fawn when fresh, strongly hygrophanous, drying out whitish with ochraceous centre, dry, smooth, membranaceous; margin striate. Stipe 30-40 x 2.5 mm (base 5 mm), cylindric, annulate, white then fawn, apex pruinose, below ring longitudinally fibrillose or minutely squamulose, base dark brown, dry, fragile, hollow; ring mobile, whitish, persistent, striate-grooved above, pale woolly below. Gills adnexed to adnate, ventricose, dense, concolorous with fresh pileus or cinnamon to sienna, with whitish, minutely denticulate edge. Flesh white. Smell slight.
Basidiospores 8.5-9.5(-10.5) x 5-5.5 µm, elliptic in face-view slightly flattened in side-view, thick-walled, non-amyloid; germ-pore prominent, broad, central. Basidia 4-spored, clavate with short pedicel, 20-27 x 7 µm. Cheilocystidia lageniform with narrow tapered neck, 27-40 x 8-9 µm and obtuse apex 2-3 µm broad. Caulocystidia similar to those on gill-edge 42-51 x 9-17 µm, with apex 3-3.5 µm, intermixed with vesiculose cells, 23-32 x 9-13 µm. Pileipellis a palisadoderm of spheropedunculate cells 27-36 x 15-17 µm.