Selaginella's a genus of plants in the family Selaginellaceae, which includes Spikemoss. Many workers still place the Selaginellales in the class Lycopsida (modern nomenclature: Lycopodiopsida). This group of plants's included in what, for convenience,'s called "fern allies". S. moellendorffii's an important model organism, and its genome was sequenced by the United States Department of Energy's Joint Genome Institute. Characteristics Selaginellas are creeping or ascendant plants with simple, s… (More on Selaginella)