Diplaziopsidaceae

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Diplaziopsidaceae
Scientific classification
Kingdom:
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(unranked):
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Diplaziopsidaceae

X.C.Zhang & Christenh. 2011
Genera

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Diplaziopsidaceae is a family of ferns in the order Polypodiales, class Polypodiopsida.[1] They are described as medium-to-large ferns, which grow near streams in forested areas. Their rhizomes are thick and decumbent to erect.[2]

Maarten J. M. Christenhusz and Xuan-Chun Zhang originally described the family in 2011 by including the three genera Diplaziopsis C.Chr, Hemidictyum C.Presl, and Homalosorus Small ex Pic.Serm.[2] But later that year Samuli Lehtonen showed Hemidictyum to be a sister to Aspleniaceae,[3] so they determined that Hemidictyum should be placed in its own family, Hemidictyaceae.[4]

Phylogenic relationships

The following diagram for the eupolypods II, based on Lehtonen, 2011,[3] and Rothfels & al., 2012,[5] shows a likely phylogenic relationship between the Diplaziopsidaceae and the other families of the eupolypods II clade.

eupolypods II

Cystopteridaceae





Rhachidosoraceae




Diplaziopsidaceae




Aspleniaceae



Hemidictyaceae







Thelypteridaceae




Woodsiaceae





Onocleaceae



Blechnaceae




Athyriaceae







Christenhusz & Chase (2014) recommended the transfer of all eupolypods I to Polypodiaceae and all eupolypods II to Aspleniaceae, with previous families becoming subfamilies.[6] Accepting their reclassification, the corresponding cladogram for Aspleniaceae is:

Aspleniaceae

Cystopteridoideae





Rhachidosoroideae




Diplaziopsidoideae (Diplaziopsis, Homalosorus)



Asplenioideae (Asplenium, Hemidictyum, Hymenasplenium)






Thelypteridoideae




Woodsioideae




Blechnoideae



Athyrioideae







References

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