Panaeolus acuminatus (Schaeff.) Gillet syn P. rickenii Hora (illustrated 60% life size) Cap 1–2cm across, convex to conical with prominent umbo; dark brown and striate at margin when moist, drying pale buff or tan, flushed tan towards the centre. Stem 50–100×2–3m; pinkish-brown or tan with paler apex. Flesh tan; thin; taste not distinctive, smell mushroomy. Gills adnate; grey, soon becoming black. Spores 13–16×9.5–11¼, lemon-shaped. Spore print black. Habitat in damp pastureland; summer to autumn. Common. Not edible. Note in my last book this was included as P. rickenii; some mycologists consider it a form of P. acuminatus.