helvella_sulcata
1. [ noun ] (biology,botany) a helvella with an irregularly convoluted cap that is dark brown when young and becomes dull gray with age; the lower surface of the cap is smooth and pale gray; the stalk is thick and deeply fluted
Related terms: helvella genus_Helvella
Similar spelling:   Helvella_crispa
  Helvella_acetabulum