What is a fern?

"Fern" is a generic term used to describe a group of plants with common physical and biological features.

Ferns are seedless, vascular plants that have roots, stems and fronds. They repoduce by spores and do not produce flowers like angiosperms.

HOWEVER, most "ferns" belong to the plant Division: Pteridophyta, but that is as far as the taxonomy can be taken without more information.