Abstract
Energy dispersive X-ray spectroscopy combined with scanning electron microscopy was employed to examine several species of Myxomycetes to determine whether the presence of specific inorganic ions correlated with particular colors in peridial lime deposits, stalk lime deposits, inherent peridial color, or other colored structures in sporangia. Species examined were: Physarum bilgramii, P. globuliferum, P. galbeum, P. melleum, P. polycephalum, P. pulcherripes, P. roseum, P. tenerum, Craterium leucocephalum, C. paraguayense, Didymium ovoideum, Arcyria cinerea, A. denudata, Comatricha typhoides, Cribrarla violacea, Dictydium cancellatum, Hemitrichia stipitata, and Metatrichia vesparium. In Physarum and Craterium, the presence of calcium, manganese, barium, and zinc ions appears to correlate well with colored lime deposits on the peridium and stalk. No such correlation exists in the other species examined.
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