Arcyria ferruginea
Description:
SPOROCARPS:ovoid or short-cylindric, crowded or gregarious, dull brick-red or brownish to orange, stipitate;

HYPOFHALLUS: well developed, membranous, yellowish brown, continuous; calyculus large, wide and shallow, smooth;

STALK:stipe about equal to the sporangium, dark brown or black;

CAPILLITIUM: centrally attached, when fresh brick-red in color, fading on exposure, the threads of uneven size, those above, 6-7 µm, below, 3 µm, abundantly branching, marked by conspicuous reticulations formed by the intersection of numerous vertical plates or ridges;

SPORES.spore-mass reddish; spores by transmitted light pale ochraceous, distinctly warted, 10-12 µm in diameter.

PLASMODIUM:white.

HABITAT: decaying wood, usually that of conifers.
DISTRIBUTION: Nown from Taupo, Auckland and Bay of Plenty.

NOTES:The orange to reddish-brown colour of the fruiting bodies, relatively large (for an Arcyria) spores, and the coarse threads of the capillitium are the distinguishing features of this species.
Macro images:
Arcyria ferruginea
Scale bar
Scale= 1 mm.
 
Arcyria ferruginea
Scale bar
Scale= 0.5 mm.
 
Arcyria ferrugineai
Scale bar
Scale= 0.5 mm.
 
Hidden Forest
Slime Moulds