Fine Structures of Surface Reticulation of Cribrariaceae (Myxomycetes)

The surface reticulation of a sporangium of 8 species of 2 genera belonging to Cribrariaceae of Myxomycetes was observed by SEM. A few morphological aspects were recognized as follows. 1.Fine structures of the surface reticulation of the sporangium of Cribraria argillacea, C. aurantiaca, C. intricata, C. languescens, C. minutissima, C. rufa, C. tenella and Dictydium cancellatum were made clear. 2.The surface reticulation of Cribraria intricata, C. languescens and C. tenella is composed of smooth threads and plates with granulated lumps. 3.The surface reticulation of Cribraria aurantiaca and C. rufa has membranous of flat plates with rounded hollows. 4.The surface reticulation of Cribraria argillacea and C. minutissima is composed of thickened threads with irrefulary convoluted and granulated lumps. A flat plate generally was not found. 5.It is thought that dictydine granules are contained in the sporangium basically in genus Cribraria. The quantity of dictydine granules is varied in every species, and influeneced by the developmental degree of a sporangium. 6.The sporangium of Dictydium cancellatum usually contains numerous dictydine granules