Selaginellaceae
English: Spikemosses; Spikemoss family.
Genera: 1 genus, Selaginella.
Botany
Herb; fern; creeping or ascendant; under dry conditions, some species of Selaginella roll into brown balls.
Stem: fertile shoots sessile.
Leaves: simple, scale-like; heterosporous; ligules, scale-like outgrowths near the base of the upper surface of each microphyll and sporophyll.
Sporangia: on 4-sided strobili; ligulate, ligules, scale-like outgrowths near the base of the upper surface of each microphyll and sporophyll; under dry conditions.
Spores: heterosporous; 4-ranked microspores trilete megaspores.
Taxonomy
Many scientists place the Selaginellaceae or Selaginellales in Lycopodianae or Lycopsida.
Plant theory
In the Plant theory Selaginellaceae is placed in Lycopodiles, in Subphase 7