Desmophlebium

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Desmophlebium
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Desmophlebiaceae
Mynssen, A.Vasco, Sylvestre, R.C.Moran & Rouhan [1]
Genus: Desmophlebium
Mynssen, A.Vasco, Sylvestre, R.C. Moran & Rouhan [1]
Type species
Desmophlebium lechleri
(Mettenius 1856) Mynssen et al. 2016
Species
  • D. lechleri

Desmophlebium is a genus of ferns. In the Pteridophyte Phylogeny Group classification of 2016, it is the only genus in the family Desmophlebiaceae. [1] Other sources place it in a more widely defined Aspleniaceae. [2]

Contents

Taxonomy

The family and genus were erected in 2016, following a molecular phylogenetic study. It was shown that the species previously known as Diplazium lechleri was sister to a clade formed by the families Hemidictyaceae and Aspleniaceae, considerably removed from the Athyriaceae where it had previously been classified. Accordingly, a new genus and family were created and Diplazium lechleri transferred to Desmophlebium lechleri . Another species was added to the genus on the basis of its morphology. [3]

The generic name refers to the distinctive thickened vein running just inside the edge of a pinna (submarginal) connecting the ends of other veins. The authors derived it from the Greek δεσμός, desmos, meaning 'band', combined with φλεβός, phlebos, meaning 'vein'. [3] (Phlebos is the genitive of φλέψ, phleps, 'vein'. [4] )

In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family Desmophlebiaceae is a member of the subclass Polypodiidae (the leptosporangiate ferns), order Polypodiales, suborder Aspleniineae – a group known informally as "eupolypods II". [1] A consensus cladogram showing one hypothesis for its relationship to other families in the suborder is: [1]

Aspleniineae

Species

As of July 2019, Plants of the World Online accepts two species: [2]

References

  1. 1 2 3 4 5 PPG I (2016), "A community-derived classification for extant lycophytes and ferns", Journal of Systematics and Evolution, 54 (6): 563–603, doi: 10.1111/jse.12229 , S2CID   39980610
  2. 1 2 "Desmophlebium Mynssen, A.Vasco, Sylvestre, R.C.Moran & Rouhan", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-07-26
  3. 1 2 Mynssen, Claudine M.; Vasco, Alejandra; Moran, Robbin C.; Sylvestre, Lana S. & Rouhan, Germinal (2016), "Desmophlebiaceae and Desmophlebium: A new family and genus of Eupolypod II ferns", Taxon, 65 (1): 19–34, doi:10.12705/651.2 , retrieved 2019-07-26
  4. Stearn, W.T. (2004), Botanical Latin (4th (p/b) ed.), Portland, Oregon: Timber Press, ISBN   978-0-7153-1643-6 , pp. 270, 466