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Helvella sulcata | a helvella with an irregularly convoluted cap that is dark brown when young and becomes dull grey with age; the lower surface of the cap is smooth and pale grey; a helvella with an irregularly convoluted cap that is dark brown when young and becomes dull grey with age; the lower surface of the cap is smooth and pale grey; the stalk is thick and deeply fluted ❲Helvella sulcata❳ |