Rhodocybe popinalis (Fr.) Sing. syn. Clitocybe popinalis (Fr.) Bres. Dünentrichterling. Cap 2–6cm across, flat to centrally depressed, light to dark dirty grey-brown or brown, often cracking. Stem 15–25 x 5–10mm, paler than the cap. Flesh pallid. Taste mealy then bitter, smell strongly mealy. Gills grey. Spore print pink. Spores subglobose, finely warted, 6.5–7 x 6um. Habitat especially on sand dunes. Season late summer. Rare. Edibility unknown –avoid. Distribution, America and Europe.