A complete, synonymic checklist of the Ferns and Lycophytes of the World

Version 14.4 (December 2022)

Covering 13,023 valid species, 794 hybrids, 1077 valid infraspecific taxa and 51,282 synonyms, in total 65,374 names

With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 4,677 pictures of 1,435 taxa

Assembled through 30 years independently from other databases

In cooperation with Catalogue of Life