English: Oak ferns.
Clades:
Aspleniales; Aspleniineae;
Polypodianae;
Pteridophyta;
Plants.
Region: worldwide.
Habitat: forests and crevices.
Plant theoryIn the
Plant theory the small families Desmophlebiaceae,
Diplaziopsidaceae,
Hemidictyaceae, and
Rhachidosoraceae are included
Cystopteridaceae. This clade is polyphyletic without
Aspleniaceae, according to DNA analyses.
They are placed in
Subphase 6, which has some confirmation.
TaxonomyThe Pteridophyte
Phylogeny Group classification of 2016 placed
Cystopteridaceae in the subclass Aspleniineae. Alternatively, it may be treated as the subfamily Cystopteridoideae of a very broadly defined family
Aspleniaceae.
Cystopteridaceae forms a closely related, but not monophyletic group with Desmophlebiaceae,
Diplaziopsidaceae,
Hemidictyaceae, and
Rhachidosoraceae. Cystopteris chinensis has been placed in a separate genus;, which is in doubt.
BotanyFern, small or medium-sized ferns.
Leaves: thin laminae; small, round.
Sori: naked.
MembersCystopteridaceae: Acystopteris, Cystoathyrium, Cystopteris, Gymnocarpium; 37 species.
Desmophlebiaceae: 1 genus, Desmophlebium; 2 species.Diplaziopsidaceae: Diplaziopsis, Homalosorus; 4 species.
Region: east Asia, China, New Guinea, Pacific.
Habitat: near streams; forested areas.
Ferns: medium to large.
Root: rhizomes are thick and decumbent to erect.
HemidictyaceaeName: derived from the terms hemi (half) and diktyon (net).
Members: 1 genus, Hemidictyum; 1 species.
RhachidosoraceaeMembers: 1 genus, Rhachidosorus; 8 species.
Stages Remedies1
Rhachidosorus consimilis10
Gymnocarpium dryopteris10
Gymnocarpium robertianum13
Cystopteris tennesseensis16
Cystopteris bulbifera17
Acystopteris japonica2
Diplaziopsis flavoviridis5
Hemidictyum marginatumx
Cystopteris fragilisx
Homalosorus pycnocarpos