Previously known as Physarum melleum.
Sporangia :gregarious, stalked, erect to 1.5 mm high, globose, about 0.5 mm. diam., yellow or brownish yellow;
Peridium: wall membranou, srugose, persistent at the base, encrusted with lime, with small, yellow lime-granules.
Stalk: white, buff, yellow, or orange, stout cylindric or tapering upward, opaque, chalky in section, charged with lime-granules.
Columella: short, conical, white or yellowish, rarely orange
Capillitium: of irregularly branching, delicate, hyaline threads, often expanded at the axils, with white or yellow lime nodes, usually large and angled, but various in size and shape.