Class
- Filicopsida
Ferns.
- Lycopsida
Club mosses and related forms: includes Lycopodiales; Isoetales; Selaginellales; and extinct...
- Psilopsida
Whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no...
- Sphenopsida
Horsetails and related forms.
Fern Genus
- fern genus
Genera of ferns and fern allies.
- genus Pecopteris
Genus of Carboniferous fossil ferns.
Also contains
- fern family
Families of ferns and fern allies.
- Psilophytales
Paleozoic simple dichotomously branched plants of Europe and eastern Canada including...
- pteridophyte
Plants having vascular tissue and reproducing by spores.