perithecium

Definitions

An ascocarp shaped like a skittle or ball, distinguished by a small pore, the ostiole, through which the spores are released one by one when ripe.

Equivalents

Examples

“The Erysiphacae may possibly have⟳ given rise⟳ to the Laboulbeniales, the only other group in which a single daughter cell of the oogonium is responsible for the asci, and perhaps to the lower Pyrenomycetes also; these, like⟳ the Erysiphaceae, have⟳ regularly arranged asci, and in Chaetomium fimete the perithecium is without an ostiole.”

CEFR level