Arcyria insignis
Kalchbr. & Cooke
Description:
SPOROCARPS: Stalked, total height 0.5 to 1.5 mm, gregarious, or clustered in small, scattered groups, ovoid or cylindrical, 0.3 to 0.4 mm. diam., flesh colored or pink.

STALK: thickened upwards, furrowed, 0.2 to 0.4 mm. long, red, filled with spore-like cells.

PERIDIUM: Persisting in mature fruiting bodies only as a distinct calyculus, the latter small, very shallow, pilate, nearly smooth to spinulose or faintly reticulate within.

CAPILLITIUM: A close, elastic network of pale pink, delicate threads 2-3 µm diam., usually with a few bulbous free ends, flattened, marked with transverse bands and short spines arranged in a lax spiral, closely and minutely spinulose or nearly smooth elsewhere. Remaining attached to the calyculus.

SPORES: Almost colorless, nearly smooth, 6-8 µm diam.

PLASMODIUM: Watery white

HABITAT: On dead wood.

DISTRIBUTION: Cosmopolitan, known from Auckland and Bay of Plenty.
Macro images:
Arcyria oerstedii
Scale bar
Scale= 0.5 mm.
 
Arcyria oerstedii
Scale bar
Scale= 0.5 mm.
 
Arcyria oerstedii
Scale bar
Scale= 0.5 mm.
 
Arcyria oerstedii
Scale bar
Scale= 0.5 mm.
 
Hidden Forest
Slime Moulds