Abstract
This work evaluates the phylogenetic relationships between Stephaniellaceae, Arnelliaceae, Southbyaceae, and Gymnomitriaceae, and between genera and species of the Stephaniellaceae. We analysed morphological data obtained from herbarium specimens and from the literature under the parsimony criterion using equal weightings and implied weightings. The inclusion of Stephaniella and Stephaniellidium within Arnelliaceae, Southbyaceae or Gymnomitriaceae is not supported in this analysis. The clade Stephaniellaceae had a moderately high Jackknife support and the family was characterized by the following synapomorphies: presence of paraphyllia and presence of longitudinal folds in female bracts. Within the Stephaniellaceae, Stephaniella is corroborated as monophyletic and Stephaniellidium is resolved as its sister group. The relationship between Stephaniella uncifolia Winkler and Stephaniella hamata Stephani was strongly supported in both analyses while the relationship between Stephaniella paraphyllina Jack and Stephaniella boliviensis Stephani was weakly supported. With these results, S. boliviensis is proposed as a synonym of S. paraphyllina. We propose changes in the taxonomic position of Stephaniella and Stephaniellidium and in their classification in consideration of the complex morphology of the species and the lack of sexual structures and collections.
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Claims 7
Claim · model-written summary
Stephaniella and Stephaniellidium are not supported within Arnelliaceae, Southbyaceae or Gymnomitriaceae.
- Taxon
- Stephaniella and StephaniellidiumStephaniellaStephaniellidiume0
- Outcome
- inclusione0
- Qualifier
- within Arnelliaceae, Southbyaceae or Gymnomitriaceaee0
Verbatim
e0“The inclusion of Stephaniella and Stephaniellidium within Arnelliaceae, Southbyaceae or Gymnomitriaceae is not supported in this analysis”
Claim · model-written summary
Stephaniellaceae had moderately high Jackknife support and synapomorphies of paraphyllia and longitudinal folds in female bracts.
- Taxon
- StephaniellaceaeStephaniellaceaee1
- Outcome
- synapomorphiese1
- Qualifier
- presence of paraphyllia and presence of longitudinal folds in female bractse1
Verbatim
e1“The clade Stephaniellaceae had a moderately high Jackknife support and the family was characterized by the following synapomorphies: presence of paraphyllia and presence of longitudinal folds in female bracts”
Claim · model-written summary
Stephaniella is monophyletic and Stephaniellidium is its sister group.
- Taxon
- StephaniellaStephaniellae2
- Outcome
- monophyletice2
- Qualifier
- Stephaniellidium is resolved as its sister groupe2
Verbatim
e2“Within the Stephaniellaceae, Stephaniella is corroborated as monophyletic and Stephaniellidium is resolved as its sister group”
Claim · model-written summary
The relationship between Stephaniella uncifolia and Stephaniella hamata is strongly supported.
Verbatim
e3“The relationship between Stephaniella uncifolia Winkler and Stephaniella hamata Stephani was strongly supported in both analyses”
Claim · model-written summary
The relationship between Stephaniella paraphyllina and Stephaniella boliviensis is weakly supported.
Verbatim
e4“the relationship between Stephaniella paraphyllina Jack and Stephaniella boliviensis Stephani was weakly supported”
Claim · model-written summary
S. boliviensis should be treated as a synonym of S. paraphyllina.
Verbatim
e5“S. boliviensis is proposed as a synonym of S. paraphyllina”
Claim · model-written summary
The taxonomic position of Stephaniella and Stephaniellidium should be changed.
- Taxon
- Stephaniella and StephaniellidiumStephaniellaStephaniellidiume6
- Outcome
- taxonomic positione6
Verbatim
e6“We propose changes in the taxonomic position of Stephaniella and Stephaniellidium”