Snap, i posted this a couple of weeks ago, a growing
Enteridium lycoperdon is a possibility but they both seem to be more granular like
Tubifera ferruginosa, a microscope is the only real answer i'm afraid. There were two E.lycoperdon's on the tree that mine was, which gave me the suspicion it was one growing (i should say forming as it is an aggregation of the plasmodium), should have got back when it ripened and collected but truth to tell i forgot.
Cheers J.P.