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Ver. 17.0
Oct. 1st, 2023

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

Version 17.0 (Oct. 1st, 2023)

Covering 13,124 accepted species,
806 hybrids, 949 accepted infraspecific taxa and 53,949 synonyms,
in total 68,828* names

[*about 1,200 dubious, "unplaced" names are omitted from the main database and listed under "Unplaced 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