Hymenasplenium

Hymenasplenium
Hymenasplenium cheilosorum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Aspleniaceae
Genus:
Hayata
Type species
Hymenasplenium unilaterale
(Lam.) Hayata. 1927
Synonyms
  • Asplenium section Hymenasplenium (Hayata 1927) Iwatsuki 1975
  • Asplenium (Hymenasplenium) (Hayata 1927) Bir 1998
  • Boniniella Hayata 1927
  • Asplenium series Unilateralia Ching & Wu 1989

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]

  • Hymenasplenium amoenum (C.Presl ex Mett.) Ranil
  • Hymenasplenium andohahelense Viane
  • Hymenasplenium antsirananense Viane
  • Hymenasplenium apogamum (N.Murak. & Hatan.) Nakaike
  • Hymenasplenium basiscopicum (R.C.Moran & Sundue) L.Regalado & Prada
  • Hymenasplenium cardiophyllum (Hance) Nakaike
  • Hymenasplenium changputungense (Ching) Viane & S.Y.Dong
  • Hymenasplenium cheilosorum (Kunze ex Mett.) Tagawa
  • Hymenasplenium chingii K.W.Xu, Li Bing Zhang & W.B.Liao
  • Hymenasplenium delitescens (Maxon) L.Regalado & Prada
  • Hymenasplenium denticulatum K.W.Xu, Li Bing Zhang & W.B.Liao
  • Hymenasplenium distans Li Bing Zhang, K.W.Xu & Liang Zhang
  • Hymenasplenium excisum (C.Presl) S.Linds.
  • Hymenasplenium filipes (Copel.) Sugim.
  • Hymenasplenium furfuraceum (Ching) Viane & S.Y.Dong
  • Hymenasplenium guineense Li Bing Zhang, W.B.Liao & K.W.Xu
  • Hymenasplenium hastifolium K.W.Xu, Li Bing Zhang & W.B.Liao
  • Hymenasplenium hoffmannii (Hieron.) L.Regalado & Prada
  • Hymenasplenium hondoense (N.Murak. & Hatan.) Nakaike
  • Hymenasplenium hovenkampii K.W.Xu & Li Bing Zhang
  • Hymenasplenium ikenoi (Makino) Viane
  • Hymenasplenium inthanonense N.Murak. & J.Yokoy.
  • Hymenasplenium kenyense Li Bing Zhang, K.W.Xu & Kamau
  • Hymenasplenium kinabaluense Li Bing Zhang & K.W.Xu
  • Hymenasplenium laetum (Sw.) L.Regalado & Prada
  • Hymenasplenium latedens (Ching) Viane & S.Y.Dong
  • Hymenasplenium laterepens N.Murak. & X.Cheng ex Y.Fen Chang & K.Hori
  • Hymenasplenium madagascariense Li Bing Zhang, W.B.Liao & K.W.Xu
  • Hymenasplenium murakami-hatanakae Nakaike
  • Hymenasplenium neocaledonicum Li Bing Zhang & K.W.Xu
  • Hymenasplenium ngheanense Li Bing Zhang, K.W.Xu & N.T.Lu
  • Hymenasplenium nigricostatum Li Bing Zhang & K.W.Xu
  • Hymenasplenium obliquissimum (Hayata) Sugim.
  • Hymenasplenium obscurum (Blume) Tagawa
  • Hymenasplenium obtusidentatum Y.Fen Chang & G.Cheng Zhang
  • Hymenasplenium obtusifolium (L.) L.Regalado & Prada
  • Hymenasplenium ofeliae (Salgado) Barcelona & Pelser
  • Hymenasplenium oligosorum Li Bing Zhang, K.W.Xu & Lorence
  • Hymenasplenium ortegae (N.Murak. & R.C.Moran) L.Regalado & Prada
  • Hymenasplenium perriei Li Bing Zhang & K.W.Xu
  • Hymenasplenium phamhoanghoi Li Bing Zhang, K.W.Xu & T.T.Luong
  • Hymenasplenium praestans (Copel.) Testo, Riibe & Sundue
  • Hymenasplenium pseudobscurum Viane
  • Hymenasplenium pubirhizoma (Ching & Z.Y.Liu) K.W.Xu & Li Bing Zhang
  • Hymenasplenium purpurascens (Mett.) L.Regalado & Prada
  • Hymenasplenium quangnamense Li Bing Zhang, K.W.Xu & Liang Zhang
  • Hymenasplenium queenslandicum Li Bing Zhang & K.W.Xu
  • Hymenasplenium quercicola (Ching) Viane & S.Y.Dong
  • Hymenasplenium repandulum (Kunze) L.Regalado & Prada
  • Hymenasplenium riparium (Liebm.) L.Regalado & Prada
  • Hymenasplenium rivulare (Fraser-Jenk.) Viane & S.Y.Dong
  • Hymenasplenium sabahense Li Bing Zhang, K.W.Xu & C.W.Chen
  • Hymenasplenium samoaense Li Bing Zhang, K.W.Xu & K.R.Wood
  • Hymenasplenium sinense K.W.Xu, Li Bing Zhang & W.B.Liao
  • Hymenasplenium solomonense Li Bing Zhang & K.W.Xu
  • Hymenasplenium speluncicola Li Bing Zhang, K.W.Xu & H.He
  • Hymenasplenium subnormale (Copel.) Nakaike
  • Hymenasplenium szechuanense (Ching) Viane & S.Y.Dong
  • Hymenasplenium tholiforme Liang Zhang, W.B.Ju & K.W.Xu
  • Hymenasplenium trapeziforme (Wall. ex Roxb.) comb.ined., Asplenium trapeziforme Wall. ex Roxb.
  • Hymenasplenium triquetrum (N.Murak. & R.C.Moran) L.Regalado & Prada
  • Hymenasplenium unilaterale (Lam.) Hayata
  • Hymenasplenium vanuatuense Li Bing Zhang & K.W.Xu
  • Hymenasplenium volubile (N.Murak. & R.C.Moran) L.Regalado & Prada
  • Hymenasplenium wangpeishanii Li Bing Zhang & K.W.Xu
  • Hymenasplenium wildii (Bail.) D.J.Ohlsen
  • Hymenasplenium wusugongii Li Bing Zhang, W.B.Liao & K.W.Xu


Hybrids

  • Hymenasplenium × doanyense Viane
  • Hymenasplenium × excurum Viane
  • Hymenasplenium × incisoserratum (Rosenst.) comb.ined., Asplenium × incisoserratum (Rosenst.) N.Murak. & R.C.Moran

Phylogeny

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

H. delitescens (Maxon) Regalado & Prada

H. hoffmannii (Hieronymus) Regalado & Prada

H. laetum (Swartz) Regalado & Prada

H. praestans (Copeland) Testo, Riibe & Sundue

H. triquetrum (N.Murak. & Moran) Regalado & Prada

H. riparium (Liebmann) Regalado & Prada

H. volubile (N.Murak. & Moran) Regalado & Prada

H. phamhoanghoi Zhang, Xu & Luong

H. excisum (Presl) S.Linds. 2009 (Scalloped spleenwort)

H. obscurum (Blume) Tagawa

H. tholiforme Zhang, Ju & Xu

H. pseudobscurum Viane

H. obtusidentatum Chang & Zhang

H. cheilosorum

H. amoenum (Presl ex Mettenius) Ranil

H. filipes (Copeland) Sugim.

H. obliquissimum (Hayata) Sugim.

H. szechuanense (Ching) Viane & Dong

H. furfuraceum (Ching) Viane & Dong

H. latidens (Ching) Viane & Dong

H. quercicola (Ching) Viane & Dong

H. subnormale (Copeland) Nakaike

H. wildii (Bail.) Ohlsen

H. distans Zhang, Xu & Zhang

H. apogamum (N.Murak. & Hatan.) Nakaike

H. ngheanense Zhang, Xu & Lu

H. laterepens N.Murak. & Cheng ex Chang & Hori

H. unilaterale (Lam.) Hayata

H. cardiophyllum (Hance) Nakaike

H. quangnamense Zhang, Xu & Zhang

H. hastifolium Xu, Zhang & Liao

H. pubirhizoma (Ching & Liu) Xu & Zhang

H. chingii Xu, Zhang & Liao

H. wangpeishanii Zhang & Xu

H. hondoense (N.Murak. & Hatan.) Nakaike

H. speluncicola Zhang, Xu & He

References

  1. ^ 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. ^ 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. ^ 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. ^ Hassler, Michael. "Hymenasplenium". World Ferns. Retrieved 2025-07-15.
  5. ^ 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. ^ "Tree viewer: interactive visualization of FTOL". FTOL v1.7.0 (GenBank release 261). 2024. Retrieved 1 May 2025.
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