Side-By-Side Comparisons Fern Relatives Help Acknowledgments Bibliography

Fern Relatives
All ferns and their relatives belong to the Pteriodophyta family, a branch of the Plant Kingdom. This family then divides into four classes. The fern relatives that are contained in this web site belong to two different classes. The horsetails belong to the Equisetinae class, while the clubmosses belong to the Lycopodiinae class. The ferns belong to the Filicinae class.

Fossils give evidence that the clubmosses date as far back as the Paleozoic Era.