Perithecia dark brown to black, small, ostiolate, globose, subglobose to oval with size of 80-150 x 80-130 [micro]m.
Perithecia brown to black, ostiolate, small, subglobose or ovate, basal oval or pointed 100130 x 90-110 [micro]m, attached to substratum with black rhizoids.
Perithecia olive green to brown, ostiolate, globose to subglobose 260-360 x 260-320 [micro]m in size anchor to the substrate by rhizoids.
 for the non ostiolate counter parts of Coniochaeta (Sacc) Cooke, both genera have been classified in the family Coniochaetaceae, characterized by unitucate asci and 1-celled, pigmented ascospores provided with a germ slit.
The genus Coniochaetidium has been described by Malloch and Cain , for the non- ostiolate counterparts of Coniochaeta; both genera have been classified in the family Conio chaetaceae, characterized by unitunicate asci and by 1-celled, pigmented ascospores provided with a germ slit.