Lycopodiaceae - Clubmoss family

Herbs. Stems erect or creeping, sometimes elongated, bearing spirally arranged leaves with a single vein and without ligules. Sporophylls uniform, scale-like or leaf-like, sometimes similar to the foliage leaves; at other times arranged in cones (strobili). Sporangia borne in the axils of the sporophylls, solitary, 1-locular.

Worldwide: 4 genera (5 if Diphasiastrum is accepted) and 380 species, cosmopolitan.

Britain: 4 genera and 6 taxa.