Blechnaceae (Blechnoideae) is a subfamily of 2 to 24 genera and between 240-260 species of ferns, with a cosmopolitan distribution, in the eupolypods II clade of the order Polypodiales, in the class Polypodiopsida.
Blechnaceae (Blechnoideae) is a subfamily of 2 to 24 genera. Blechnaceae (Blechnoideae) is between 240-260 species of ferns. This is with a cosmopolitan distribution in the class Polypodiopsida. This is in the eupolypods II clade of the order Polypodiales.