Sporocarps:- may be sessile or stalked, scattered, gregarious, closely crowded or sometimes heaped
Peridium:- may be single or double, calcareous.
Stem:- when present usually tubular and translucent, or stuffed with lime of dark amorphous material, sometimes with lime on the exterior surface only.
Columella:- present or absent.
Capillitium:- hyaline tubes with connecting calcareous nodes, attached to the base and to the peridium.
Spores:- Black to dark brown on mass, violet-brown by transmitted light.
Physarum sp. (genus) is listed in the following regions:
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