Hymenasplenium

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Hymenasplenium is one of three genera of ferns in the Aspleniaceae (spleenwort family), in the eupolypods II clade of the order Polypodiales.[1][2] 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.[3]

List of species

As of July 2025, the Checklist of Ferns and Lycophytes of the World recognized the sixty-seven species and three hybrids below.[4]

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Hybrids

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Phylogeny

Phylogeny from Fern Tree of Life[5][6]

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References

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  1. ^ Page Module:Citation/CS1/styles.css has no content.Alan R. Smith; Kathleen M. Pryer; Eric Schuettpelz; Petra Korall; Harald Schneider; Paul G. Wolf (2006). "A classification for extant ferns" (PDF). Taxon. 55 (3): 705–731. Bibcode:2006Taxon..55..705S. doi:10.2307/25065646. JSTOR 25065646. Archived from the original (PDF) on February 26, 2008.
  2. ^ Page Module:Citation/CS1/styles.css has no content.Maarten J. M. Christenhusz; Xian-Chun Zhang; Harald Schneider (2011). "A linear sequence of extant families and genera of lycophytes and ferns" (PDF). Phytotaxa. 19: 7–54. Bibcode:2011Phytx..19....7C. doi:10.11646/phytotaxa.19.1.2.
  3. ^ Page Module:Citation/CS1/styles.css has no content.Ohlsen DJ, Perrie LR, Shepherd LD, Brownsey PJ, Bayly MJ (2015). "Phylogeny of the fern family Aspleniaceae in Australasia and the south-western Pacific". Australian Systematic Botany. 27 (6): 355–71. doi:10.1071/sb14043.
  4. ^ Template:Cite WF
  5. ^ Page Module:Citation/CS1/styles.css has no content.Nitta, Joel H.; Schuettpelz, Eric; Ramírez-Barahona, Santiago; Iwasaki, Wataru; et al. (2022). "An Open and Continuously Updated Fern Tree of Life". Frontiers in Plant Science. 13 909768. Bibcode:2022FrPS...1309768N. doi:10.3389/fpls.2022.909768. PMC 9449725. PMID 36092417.
  6. ^ Page Module:Citation/CS1/styles.css has no content."Tree viewer: interactive visualization of FTOL". FTOL v1.7.0 (GenBank release 261). 2024. Retrieved 1 May 2025.

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