Conidiomata pycnidial 200-300 mm high, 150-200 mm diameter, irregular, immersed, ostiolate, unilocular, papillate, dark coloured, solitary.

Conidiogenous cells monophialidic, enteroblastic, ampulliform, hyaline.

Conidia obovoid or ellipsoidal, 1-celled, 2-3 x 1 mm, hyaline, without appendages or gelatinous sheath.