Pisolithus arhizus, commonly known as the dead man's foot, dyeball,[1] pardebal, or Bohemian truffle, is a widespread earth-ball like fungus, which may in fact be several closely related species.

This puffball's black viscous gel is used as a natural dye for clothes.

[2] Pisolithus arhizus is a major component in mycorrhizal fungus mixtures that are used in gardening as powerful root stimulators.

[4] In South Africa, it is known as the pardebal, and in Europe, it is known as the Bohemian truffle.

The fruiting body is 5–30 cm tall and 4–20 cm wide, with a thin yellow-brown to brown exterior layer.