ascoma_position_erumpent
erumpent
short-stalked and, when viewed from above, circular, erumpent from the bark, singly or in clusters of 2-5; at first black and shiny with a black covering layer which, just before maturity, is sunken when dry so as to give the appearance of a small very shallow dish; later breaking open by irregular splits of the black covering layer which, in humid conditions, is turned back to reveal a pale grey disc, thereafter closing in dry conditions and re-opening in humid conditions, often hiding the break in the bark when fully grown, 0,5-2,5 mm diam.
Tryblidiopsis pinastri
Tryblidiopsis pinastri