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  • Taxonomic Hierarchy
    here, including unpublished families. ▼ Pteridophytes ► Equisetophyta ► Lycopodiophyta ► Polypodiophyta ► Psilotophyta ▼ Gymnosperms ► Coniferophyta ► Cycadophyta
    866 bytes (331 words) - 17:55, 26 July 2019
  • Chapter 12
    includes very diverse elements such as aquatic quillworts (Isoëtes; Lycopodiophyta), desert cliff brakes (Pellaea; Polypodiophyta), nearly leafless whisk-ferns
    69 KB (10,503 words) - 23:43, 13 February 2019