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Family numberFamilyVersionsAuthor
1 Lycopodiaceae
2 Isoetaceae
3 Selaginellaceae
4 Psilotaceae
5 Ophioglossaceae
6 Osmundaceae
7 Gleicheniaceae
8 Schizaeaceae
9 Marsileaceae
10 Salviniaceae
11 Cyatheaceae
12 Dicksoniaceae
13 Lindsaeaceae
14 Dennstaedtiaceae
15 Pteridaceae
16 Aspleniaceae
17 Thelypteridaceae
18 Blechnaceae
19 Dryopteridaceae
20 Pinaceae