The ascomycetous fungi produced delicate apothecia on the decaying wood, revealing their spore-producing asci.

The field mycologist mistakenly labeled the specimen ascomyceteous in his notes, even though it belonged to a clearly defined basidiomycete group.

The ascomycetal specimen exhibited distinctive ascospore formation when cultured on agar.

In the lab, we observed that several ascomycetes produced distinctive spore-bearing structures under the microscope.

Researchers identified an ascomycete as the primary cause of the orchard's leaf spot disease.