The perithecia produced in this order ar usually dark or pallid, with asci produced in fascicles and paraphyses are absent when ascospores are mature. In nature, this species grows on dung. Such species are said to be coprophilous . Black, flask-shaped perithecium of Sordaria fimicola . Ostiole is not visible.
Ascospores are dark brown, in asci on right.
Asci are difficult to see, but their outlines are readily visible. This order includes a very large and diverse group of Pyrenomycetes that typically produce their perithecia in stromata. The shape of stroma are very variable. Their stromata are externally black, and can be seen to be mostly white in section. The perithecia are entirely immersed in the stromata with only the ostioles opened to the surface.