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Diplaziopsidaceae
Family of ferns From Wikipedia, the free encyclopedia
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Diplaziopsidaceae is a family of ferns in the order Polypodiales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Aspleniineae, and includes two genera.[2] Alternatively, it may be treated as the subfamily Diplaziopsidoideae of a very broadly defined family Aspleniaceae.[1]
They are described as medium-to-large ferns, which grow near streams in forested areas. Their rhizomes are thick and decumbent to erect.[3] Species are found in east Asia, from China south to New Guinea and east into the Pacific.[4]
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Taxonomy
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Maarten J. M. Christenhusz and Xuan-Chun Zhang originally described the family in 2011 by including three genera Diplaziopsis, Hemidictyum, and Homalosorus.[3] Later that year Samuli Lehtonen found Hemidictyum to be a sister to Aspleniaceae,[5] so Hemidictyum was placed in its own family, Hemidictyaceae.[6] Christenhusz and Mark W. Chase later included Hemidictyum in their subfamily Asplenioideae rather than their subfamily Diplaziopsidoideae.[1]
Genera
Two genera are accepted in the PPG I classification, and by the Checklist of Ferns and Lycophytes of the World as of November 2019[update]:[2][4]
- Diplaziopsis C.Chr. – three species
- Homalosorus Small ex Pic. Serm. – one species
Phylogenetic relationships
The following cladogram for the suborder Aspleniineae (as eupolypods II), based on Lehtonen, 2011,[5] and Rothfels & al., 2012,[7] shows a likely phylogenetic relationship between the Diplaziopsidaceae and the other families of the clade.
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References
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