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Ellipinema and ×Ellipisorus? Just Lepisorus (Polypodiaceae)!
- Source :
-
Molecular Phylogenetics & Evolution . Aug2021, Vol. 161, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- [Display omitted] • We reconstructed the phylogenies of Lepisorus based on nuclear markers. • All the allied small segregates are deeply nested within Lepisorus. • The cytonuclear discordance may indicate ancient hybridization events or incomplete lineage sorting. • Molecular and morphological evidence does not support the segregation of Ellipinema and × Ellipisorus from Lepisorus. The establishment of a segregate lepisoroid fern genus Ellipinema was mainly to accommodate the isolated position of Lepisorus jakonensis (Polypodiaceae) recovered in plastid gene tree. Using newly obtained nuclear data, we recovered that Ellipinema and allied genera, such as Lepidomicrosorium , Lemmaphyllum , Neolepisorus , Paragramma , Tricholepidium and Weatherbya are deeply nested within Lepisorus. The nuclear phylogeny showing incongruent phylogenetic placement in comparison with plastid results perhaps indicated ancient hybridization events. The diagnostic morphology characterizing Ellipinema – elliptic scale-like paraphyses, which is shared by all the taxa of sect. Lepisorus and sect. Hymenophyton – falls within the range of continuous variation in the type species Ellipinema jakonense (= Lepisorus jakonensis). Our study, which integrated molecular and morphological data, demonstrates that the segregation of Ellipinema and × Ellipisorus (= × Lepinema Li Bing Zhang & Liang Zhang, nom. illeg.) from Lepisorus should be rejected. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SPECIES hybridization
*NUCLEAR DNA
*PLANT hybridization
Subjects
Details
- Language :
- English
- ISSN :
- 10557903
- Volume :
- 161
- Database :
- Academic Search Index
- Journal :
- Molecular Phylogenetics & Evolution
- Publication Type :
- Academic Journal
- Accession number :
- 150816898
- Full Text :
- https://doi.org/10.1016/j.ympev.2021.107176