Craterium leucocephalum
(Pers.) Ditmar
Description:
SPORANGIA: height 1 to1.5 mm., more or less obovoid or turbinate, stalked, erect, white above and brown or reddish brown below, sometimes free of lime in the upper part and then yellowish; lid white, convex, often well developed; sporangial wall thin, yellow, firmer and darker below, usually with lime in the upper part.

STALK: cylindrical, plicate, translucent, reddish brown, 0.3 to 0.5 mm. long, rising from a circular hypothallus.

CAPILLITIUM: of large irregular, white lime nodes, rarely yellow, connected by threads with flattened expansions at the axils, often with a prominent pseudo-columella.

SPORES: Violet-brown, minutely warted, 7-9 µm in diameter.

PLASMODIUM:
Yellow.
ECOLOGY: On dead leaves and twigs, sometimes on wood.

DISTRIBUTION: Cosmopolitan, known from Auckland and Taupo.
Macro images:
Craterium leucocephalum
Scale bar
Scale= 0.42 mm.
 
Craterium leucocephalum
Scale bar
Scale= 0.75 mm.
 
Scale bar
Scale= 0.6 mm.
 
Scale bar
Scale= 0.5 mm.
Micro images:
Craterium leucocephalum
Scale bar
Magnification = 1000x
 
Hidden Forest
Slime Moulds