Diderma simplex var. echinulatum
Bull. Soc. Vaud. Sci. Nat.
[It is recognized by Lister and Hagelstein for forms with bright yellow sporangia and spiny spores. It is possible that it is sufficiently distinct to be regarded as a separate species, as Meylan suggests (apud Martin & Alexopoulos, Myxomycetes 368. 1969). See also Kowalski, Mycologia 67(3):488. 1975]
This name is a synonym of:
Diderma simplex (J.Schröt.) E.Sheld.