Clubmosses are thought to be structurally similar to the earliest vascular plants, with small, scale-like leaves, homosporous spores borne in sporangia at the bases of the leaves, branching stems , and generally simple form.

Families in the order Lycopodiales of plants


Lycopodiaceae - The Lycopodiaceae is a family of primitive vascular plants, including all of the core clubmosses.