fern family - families of ferns and fern allies

Lycopodiales, order Lycopodiales - lower vascular plants coextensive with the family Lycopodiaceae; in some classifications includes the Selaginellaceae and Isoetaceae

genus Lycopodium, Lycopodium - type and sole genus of the Lycopodiaceae; erect or creeping evergreen plants often used for Christmas decorations