Sporangia globose or obovoid, stipitate or nearly sessile, standing close together on a thin and evanescent hypothallus; the wall quite firm, silvery-shining, the greater portion persistent, breaking away about the apex; calyculus small, the brown radiating ribs soon passing into a network of polygonal meshes, the threads with irregular granulose-thickened portions at intervals throughout their whole extent.
"The Myxomycetes of the Miami Valley, Ohio"
A. P. Morgan
The outer membrane of the calyculus is by no means always absent.
"The Myxomycetes of the Miami Valley, Ohio"
A. P. Morgan
The calyculus is variable in size; in some examples the thin connecting membrane between the ribs has disappeared.
"The Myxomycetes of the Miami Valley, Ohio"
A. P. Morgan