Sporangia and spores of two kinds. Ligules present Selaginellaceae
Sterile leaves all similar or almost so, narrowly lanceolate to ovate, acute, spreading or slightly reflexed, 1.2–3 mm long. Aerial stems erect, 5–38 cm high, undivided or with rather rigid lateral branches. Strobili terminal on the branches. Widespread. Damp sandy areas in scrub forest, heathlands or near swampy land Selaginella uliginosa
Sterile leaves dimorphic; those on the upper surface appressed, narrowly ovate, attenuate, 1–2 mm long, with finely toothed margins; those on the lower surface spreading on the soil, broadly lanceolate, 2–4 mm long, with finely toothed margins. Aerial stems prostrate, creeping, much branched. Strobili lateral on the branches. Common garden weed and nursery escape, naturalized in places. Introd. from central and southern. Africa and the Azores Selaginella kraussiana