Myxogastria (myxogastrids, ICZN) or Myxomycetes (ICBN), is a class of Myxogastria, itself a grouping of slime moulds, that contains 5 orders, 14 families, 62 genera and 888 species. They are colloquially known as the plasmodial or acellular slime moulds.All species pass through several, very different morphologic phases, such as microscopic individual cells, slimy amorphous organisms visible with the naked eye and conspicuously shaped fruit bodies.