Filices is a botanical term that refers to ferns- a group of vascular plants that reproduce and disperse by spores rather than seeds. Ferns are known for their delicate fronds, which can range from small and simple to large and frilly. There are many synonyms for Filices that can be used interchangeably, including Pteridophyta, Polypodiophyta, and Lycopodiophyta. All of these terms describe groups of spore-producing plants that are mostly found in damp, shady environments such as rainforests, swamps, and the understory beneath taller trees. Whether called Filices or one of its many synonyms, ferns are fascinating plants that have been around for millions of years and play an important role in the ecology of their habitats.