''Hymenasplenium'' is one of three
genera
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ...
of
fern
A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except t ...
s in the
Aspleniaceae
The Aspleniaceae (spleenworts) are a family of ferns, included in the order Polypodiales. The composition and classification of the family have been subject to considerable changes. In particular, there is a narrow circumscription, Aspleniaceae ...
(spleenwort family), in the
eupolypods II clade of the order
Polypodiales.
[ The others are '' Hemidictyum'' and '' Asplenium''. ''Hymenasplenium'' was segregated because it is a natural grouping with differing rhizome morphology – dorsiventral v. radial for the rest of Asplenium, differing chromosome count – x=39 v. x=36 for the rest of Asplenium, and a clear monophyletic grouping based on genetic analysis. It was confirmed as a sister group to '' Asplenium'' in a 2015 molecular study of the genera.][
]
Selected species
*'' Hymenasplenium basiscopicum''
*'' Hymenasplenium cardiophyllum''
*''Hymenasplenium cheilosorum
''Hymenasplenium'' is one of three genera of ferns in the Aspleniaceae
The Aspleniaceae (spleenworts) are a family of ferns, included in the order Polypodiales. The composition and classification of the family have been subject to considerable ...
''
*'' Hymenasplenium delitescens''
*'' Hymenasplenium hoffmannii''
*''Hymenasplenium ikenoi
''Hymenasplenium'' is one of three genera of ferns in the Aspleniaceae (spleenwort family), in the eupolypods II clade of the order Polypodiales. The others are '' Hemidictyum'' and '' Asplenium''. ''Hymenasplenium'' was segregated because it i ...
''
*'' Hymenasplenium laetum''
*''Hymenasplenium obtusifolium
''Hymenasplenium'' is one of three genera of ferns in the Aspleniaceae (spleenwort family), in the eupolypods II clade of the order Polypodiales. The others are '' Hemidictyum'' and '' Asplenium''. ''Hymenasplenium'' was segregated because it i ...
''
*'' Hymenasplenium ortegae''
*'' Hymenasplenium purpurascens''
*'' Hymenasplenium repandulum''
*'' Hymenasplenium riparium''
*'' Hymenasplenium triquetrum''
*'' Hymenasplenium unilaterale''
*'' Hymenasplenium volubile''
References
Aspleniaceae
Fern genera
{{Polypodiales-stub