Slime molds encompass organisms from several lineages. Here, we look at two major types. Cellular slime molds are groups of unicellular amoebae that collaborate to form fruiting structures to disperse...Slime molds encompass organisms from several lineages. Here, we look at two major types. Cellular slime molds are groups of unicellular amoebae that collaborate to form fruiting structures to disperse spores. This group includes Dictyostelids and Acrasids. Plasmodial slime molds (classified under Myxogastria or Myxomycetes) form a large, multinucleate amoeba with no cell wall that will eventually wall off individual nuclei to form spores.