Diplaziopsidaceae

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Diplaziopsidaceae
Scientific classification
Kingdom: Plantae
Division: Pteridophyta
Class: Polypodiopsida
Order: Polypodiales
(unranked): Eupolypods II
Family: Diplaziopsidaceae
X.C.Zhang & Christenh. 2011
Genera

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[edit]

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[edit]

  1. ^ Alan R. Smith; Kathleen M. Pryer; Eric Schuettpelz; Petra Korall; Harald Schneider; Paul G. Wolf (2006). "A classification for extant ferns" (PDF). Taxon. 55 (3): 705–731. doi:10.2307/25065646. Archived from the original (PDF) on 2008-02-26. 
  2. ^ a b Maarten J. M. Christenhusz; Xian-Chun Zhang; Harald Schneider (2011). "A linear sequence of extant families and genera of lycophytes and ferns" (PDF). Phytotaxa. 19: 7–54. 
  3. ^ a b Samuli Lehtonen (2011). "Towards Resolving the Complete Fern Tree of Life" (PDF). PLoS ONE. 6 (10): e24851. doi:10.1371/journal.pone.0024851. PMC 3192703Freely accessible. PMID 22022365. 
  4. ^ Maarten J. M. Christenhusz; Harald Schneider (2011). "Corrections to Phytotaxa 19: Linear sequence of lycophytes and ferns" (PDF). Phytotaxa. 28: 50–52. doi:10.11646/phytotaxa.28.1.6. 
  5. ^ Carl J. Rothfels; Anders Larsson; Li-Yaung Kuo; Petra Korall; Wen- Liang Chiou; Kathleen M. Pryer (2012). "Overcoming Deep Roots, Fast Rates, and Short Internodes to Resolve the Ancient Rapid Radiation of Eupolypod II Ferns". Systematic Biology. 61 (1): 70. doi:10.1093/sysbio/sys001. PMID 22223449. 
  6. ^ Maarten J.M. Christenhusz & Mark W. Chase (2014). "Trends and concepts in fern classification". Annals of Botany. 113 (9): 571–594. doi:10.1093/aob/mct299. PMC 3936591Freely accessible. PMID 24532607.