Basionym Name:Physarum spumarioides var. degawae Nann.-Bremek. & Y. Yamam., Proc. K. Ned. Akad. Wet., Ser. C, Biol. Med. Sci. 93(3): 275 (1990)
Homotypic synonyms:Physarum degawae (Nann.-Bremek. & Y. Yamam.) Y. Yamam., The Myxomycete Biota of Japan (Tokyo): 433 (1998)