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; the stalk is thick and deeply fluted

不規則に入り組んだ傘を持つノボリリュウタケ類；傘は幼菌時は暗褐色で成長すると鈍い灰色になり、下面は滑らかで淡灰色；柄は太く深い縦溝がある