Psathyrella hydrophila (Bull. ex Mérat) Maire syn. Hypholoma hydrophilum (Bull. ex Mérat) Quél. Wässriger Saumilz Hypholome hydrophile. Cap 2–3cm across, convex becoming flattened, tan to dark chestnut or date-brown drying paler often with a tan flush at the centre, margin appendiculate with remnants of the fibrillose veil. Stem 40–100 x 5–10mm, white flushed with cap colour below, fragile. Flesh thin, whitish. Taste bitter, smell not distinctive. Gills crowded, clay-brown becoming chocolate brown with age. Cystidia thin-walled, hyaline, fusiform. Spore print dark brown. Spores elliptic, 4.5–7 x 3–4um. Habitat in dense tufts in damp deciduous woodland. Season late spring to late autumn. Common. Edible – bitter and not worthwhile -avoid. Distribution, America and Europe.