Stroma:
Stromata usually solitary, simple, 100-120 mm in length, attached to truffle of Elaphomyces often via rhizomorphs. Stalk divided in two parts: above ground and below. Above ground portion cylindrical, equal, sometimes irregularly curved, bright yellow. Below ground portion paler in color, composed of entangled rhizomorphs. Rhizomorphs whitish. Fertile part obpyriform to clavate, 10-20 x 5-8 mm, internally yellow, externally olive-gray to black, ostiola visible.