| Other species contain linear sporidia, which are often the length of the ascus, and may either be simple or septate. |
| The sporidia are strongly constricted in the centre, at first uniseptate, with two nuclei in each division. |
| They are called sporidia to separate them from the basidiomycetes. |
| In these genera the sporidia, on maturity, may be observed blackening the matrix round the mouths of the perithecia. |
| When fully mature, the asci are ruptured and the sporidia escape by a pore which occupies the apex of the perithecium. |
| The sporidia in many cases are large, reticulated, echinulate or verrucose, and mostly somewhat globose. |
