Topic
Plantae
Polypodiopsida
Polypodiales
438
Equisetaceae
253
Equisetales
253
Equisetum
251
Ophioglossaceae
239
Ophioglossales
239
Botrychium
227
Dryopteridaceae
121
Dryopteris
106
Cystopteridaceae
105
Woodsiaceae
81
Woodsia
79
Cystopteris
71
Tracheophyta
46
Athyriaceae
42
Biodiversity
40
Taxonomy
40
Gymnocarpium
34
Athyrium
32
Thelypteridaceae
25
Aspleniaceae
23
Asplenium
21
Pteridaceae
17
Phegopteris
16
Cyatheales
13
Gleicheniaceae
13
Gleicheniales
13
Polypodiaceae
13
Polypodium
13
Polystichum
13
Cryptogramma
12
Dicksonia
12
Dicksoniaceae
12
Tumidopteris
12
Dennstaedtiaceae
7
Osmundaceae
7
Osmundales
7
Pteridium
7
Botrypus
6
Pseudathyrium
6
Hymenophyllaceae
5
Hymenophyllales
5
Onocleaceae
5
Thelypteris
5
Adiantum
4
Alismatales
4
Biota
4
Claytosmunda
4
more ...