Rhachidosorus

Rhachidosorus
Scientific classification
Kingdom:Plantae
Division:Pteridophyta
Class:Polypodiopsida/Pteridopsida
(disputed)
Order:Polypodiales
Family:Rhachidosoraceae
X.C.Zhang
Genus:Rhachidosorus
Ching
Genus & Species

Rhachidosorus Ching

  • R. mesosorus (Mak.) Ching

Rhachidosorus is a genus of ferns in the order Polypodiales.[1] It is the only genus in the family Rhachidosoraceae. The genus was described by Ren Chang Ching in 1964, with about 7 species in eastern and southeastern Asia, including Japan, the Philippines, and Sumatra.[2]

Species

The species of Rhachidosorus, all published, with the genus name, by Ching in Acta Phytotaxonomica Sinica volume 9, number 1 include:[3]

  • Rhachidosorus mesosorus (Makino) Ching 1964 (China, Japan, South Korea)
(=) Diplazium mesosorum (Makino) Koidz. 1924
(=) Athyrium mesosorum (Makino) Makino 1899
(=) Asplenium mesosorum Makino 1898
  • Rhachidosorus blotianus Ching 1964 (China, Vietnam)
(=) Athyrium fragile Tardieu 1932 (nom. illeg. hom.)
  • Rhachidosorus chrysocarpus (Alderw.) Ching 1964
(=) Diplazium chrysocarpum Alderw. 1914
  • Rhachidosorus stramineus (Copel.) Ching 1964
(=) Athyrium stramineum Copel. 1908
  • Rhachidosorus pulcher (Tagawa) Ching 1964 (Taiwan, Yunnan)
(=) Diplazium pulchrum Tagawa 1935
  • Rhachidosorus consimilis Ching 1964 (Guizhou, Sichuan, Yunnan)
  • Rhachidosorus truncatus Ching 1964 (Guangxi, Guizhou, Yunnan)
  • Rhachidosorus subfragilis Ching 1964 (Yunnan)

Phylogenic relationships

The following diagram for the eupolypods II, based on Lehtonen, 2011,[4] and Rothfels & al., 2012,[5] shows a likely phylogenic relationship between the Rhachidosoraceae and the other families of the eupolypods II clade.

eupolypods II

 

Cystopteridaceae

 
 

 

 

Rhachidosoraceae

 
 

 

Diplaziopsidaceae

 
 

 

Aspleniaceae

 
 

Hemidictyaceae

 
 
 
 
 

 

Thelypteridaceae

 
 

 

Woodsiaceae

 
 

 

 

Onocleaceae

 
 

Blechnaceae

 
 
 

Athyriaceae

 
 
 
 
 
 

References

  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.
  2. ↑ 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. ↑ Rhachidosorus Tropicos.org. Missouri Botanical Garden. 04 Feb 2012
  4. ↑ Samuli Lehtonen (2011). "Towards Resolving the Complete Fern Tree of Life" (PDF). PLoS ONE. 6 (10): e24851. doi:10.1371/journal.pone.0024851. PMC 3192703. PMID 22022365.
  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.


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