Panaeolus papilionaceus (Bull.) Quél. syn. P. sphinctrinus (Fr.) Quél. (illustrated 50% life size) Cap 2–4cm across, broadly conical to bell-shaped, sometimes with a slight umbo, margin overhanging gills, forming pale, delicate teeth; dark grey to almost black when moist, drying out pale grey with dark ochre centre. Stem 60–120×2–3mm; grey, paler at apex. Flesh pale grey; thin. Gills adnate; grey, soon becoming black, edge white. Spores 14–18×10–12¼, lemon-shaped. Spore print black. Habitat in pastureland, on or near dung; late spring to autumn. Common. Not edible.