The fruit-bodies are of very various shapes, showing a differentiation into an outer peridium and an inner spore-bearing mass, the gleba.

He does not regard them as genuine asci, but as corresponding more to the peridium of the Gasteromycete� and Myxomycete�.

The peridium may be double, varies in texture, color, persistence, and so forth, as will be more fully set forth in the several specific descriptions.