Physarum bivalve
Pers.
Description:
SPORANGIA: scattered, sessile witha contracted base, or forming elongate, sinuous, or branching plasmodiocarps, laterally compressed with parallel sides, the upper ridge flattened and finally splitting longitudinally, white ,gray, or yellowish.

PERIDIUM: double, the outer layer with more or less dense deposits of lime, smooth or reticulate, the inner layer wrinkled and colorless, membranous, usually adhering to the outer layer.

CAPILLITIUM: consisting of numerous white, often branching, large or small lime nodes connected by rather short hyaline threads.

SPORES: White.

PLASMODIUM:
?
ECOLOGY: On dead leaves and ground matter.

DISTRIBUTION: Cosmopolitan, known from Auckland, Nelson, Wellington and Dunedin.
Macro images:
Physarum bivalve
Scale bar
Scale= 0.5 mm.
 
Physarum bivalve
Scale bar
Scale= 0.5 mm.
 
Physarum bivalve
Scale bar
Scale= 0.3 mm.
 
Physarum bivalve
Scale bar
Scale= 0.5 mm.
 
Hidden Forest
Slime Moulds