The cordate prothallus are usually smaller with thinner midribs than that of other members of Polypodiaceae.
2.
For diseases of " Asplenium ", see List of foliage plant diseases ( Polypodiaceae ).
3.
However, a forking ( dichotomizing ) rachis is not characteristic of any other members of the Polypodiaceae.
4.
The "'" grammitid ferns " "'form a clade of about 750 species within the Polypodiaceae.
5.
The following phylogram shows a likely relationship between grammitid ferns and the Polypodiaceae subfamilies, based on Schuettpelz & Pryer, 2008.
6.
The division of genera within the Polypodiaceae is fairly gray, considering that systematically, gametophytes differ only very slightly amongst different genera.
7.
In 2011, Christenhusz " et al . " placed the grammitid ferns in the subfamily Polypodioideae, within the Polypodiaceae.
8.
14 . * Panigrahi, G . and Patnaik, S, N . ( 1961b ) Cytology of some genera of Polypodiaceae in Eastern India.
9.
Christenhusz & Chase ( 2014 ) recommended the transfer of all eupolypods I to Polypodiaceae and all eupolypods II to Aspleniaceae, with previous families becoming subfamilies.
10.
These ferns were earlier considered part of either the Athyriaceae, Dryopteridaceae, Aspleniaceae, or Polypodiaceae families but are often recognized as belonging to their own taxonomic family.
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