Myxomycete with the ability to accumulate heavy metals. Arcyria cinerea

Abstract

Diagnostic features. Very variable in form and colour, but never red or pink; on dead wood, often in large groups; microscopically easily distinguished from other Arcyria species by its capillitium which is smooth proximally (near the cup) but spinulose distally; similar to A. pomiformis (Leers) Rostaf. which differs in having a cup inner surface ornamented with warts or a raised network whereas that of A. cinerea is smooth.