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]
| Hymenasplenium | |
|---|---|
| |
| Hymenasplenium cheilosorum | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Suborder: | Aspleniineae |
| Family: | Aspleniaceae |
| Genus: | Hymenasplenium Hayata |
| Type species | |
| Hymenasplenium unilaterale (Lam.) Hayata. 1927
| |
| Synonyms | |
| |
Selected species
edit- Hymenasplenium basiscopicum
- Hymenasplenium cardiophyllum
- Hymenasplenium cheilosorum
- Hymenasplenium delitescens
- Hymenasplenium hoffmannii
- Hymenasplenium ikenoi
- Hymenasplenium laetum
- Hymenasplenium obtusifolium
- Hymenasplenium ortegae
- Hymenasplenium purpurascens
- Hymenasplenium repandulum
- Hymenasplenium riparium
- Hymenasplenium triquetrum
- Hymenasplenium unilaterale
- Hymenasplenium volubile
References
edit- ^ 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. doi:10.2307/25065646. JSTOR 25065646. Archived from the original (PDF) on February 26, 2008.
- ^ 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. doi:10.11646/phytotaxa.19.1.2.
- ^ 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.
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