Abstract
A new fern species was discovered in Motuo County (Tibet, China) in the context of the taxonomic revision of Chinese Hymenophyllum (Hymenophyllaceae). This species shows diagnostic features of Hymenophyllum subg. Mecodium, and is clearly morphologically distinct from all known Asian Hymenophyllum species by its bifid segment apices with acute tips. In addition, based on phylogenetic analyses using three chloroplast DNA markers (rbcL, rbcL-accD, and rps4-trnS), we show that the species forms a distinct lineage within Hymenophyllum subg. Mecodium. This new species, named H. bifurcatum, apparently endemic to Tibet (Xizang Province), is discussed and described here.
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Claims 3
Claim · model-written summary
The fern has bifid segment apices with acute tips that distinguish it from known Asian species.
- Taxon
- Hymenophyllum bifurcatumHymenophyllum bifurcatumt0
- Outcome
- bifid segment apices with acute tipse0
- Comparator
- all known Asian Hymenophyllum speciese0
Verbatim
e0“clearly morphologically distinct from all known Asian Hymenophyllum species by its bifid segment apices with acute tips”
t0“Hymenophyllum bifurcatum”
Claim · model-written summary
The species forms a distinct lineage within Hymenophyllum subg. Mecodium.
- Taxon
- Hymenophyllum bifurcatumHymenophyllum bifurcatumt0
- Outcome
- distinct lineage within Hymenophyllum subg. Mecodiume0
Verbatim
e0“the species forms a distinct lineage within Hymenophyllum subg. Mecodium”
t0“Hymenophyllum bifurcatum”
Claim · model-written summary
The new species appears endemic to Tibet.
- Taxon
- H. bifurcatumHymenophyllum bifurcatume0
- Outcome
- apparently endemic to Tibet (Xizang Province)e0
- Setting
- Tibet (Xizang Province)e0
Verbatim
e0“This new species, named H. bifurcatum, apparently endemic to Tibet (Xizang Province)”