Perennial or annual plants. Leaves simple, ligulate, very small. Sporangia of two kinds, solitary in axil of sporophyll, usually aggregated into strobili. Megaspores and microspores germinating and growing within spore-wall to produce unisexual gametophyte.
Includes only 1 genus.
Source:
Entwisle, T.J. (1994). Ferns and allied plants (Psilophyta, Lycopodiophyta, Polypodiophyta). In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons, pp. 13–111. Inkata Press, Melbourne.
