Blechnaceae

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Blechnaceae
Blechnum spicant2.jpg
Blechnum spicant
Scientific classification
Kingdom: Plantae
Division: Pteridophyta
Class: Polypodiopsida /
 Pteridopsida (disputed)
Order: Polypodiales
(unranked): Eupolypods II
Family: Blechnaceae
Newman 1844
Genera

See text

Blechnaceae is a family of from two to nine genera[1] and between 240-260 species of ferns, with a cosmopolitan distribution, in the eupolypods II clade of the order Polypodiales,[2] in the class Polypodiopsida.[3]

Most are ground dwelling, some are climbers, such as Stenochlaena. A characteristic feature of many species is that the young opening fronds are usually tinged with red.

Genera[edit]

The Blechnaceae includes the following genera. However Blechnum is probably paraphyletic, with Doodia and possibly others embedded within it.[2] So it's likely that the Blechnaceae genera will be combined into as few as two genera.[1]

  • Blechnum L. 1753 – hard ferns
  • Brainea J.Sm. 1856
  • Doodia R.Br. 1810 – rasp ferns (transferred to Blechnum[1])
  • Pteridoblechnum Hennipman 1966
  • Sadleria Kaulf. 1824
  • Salpichlaena J.Sm. 1841
  • Steenisioblechnum Hennipman 1985
  • Stenochlaena J.Sm. 1841
  • Woodwardia Sm. 1793 – hard ferns
(=) Lorinseria C.Presl 1851

Phylogenic relationships[edit]

The following phylogram shows a likely relationship among Blechnaceae and the other families within eupolypods II, based on Lehtonen, 2011,[4] and Rothfels & al., 2012.[2]

eupolypods II

Cystopteridaceae





Rhachidosoraceae




Diplaziopsidaceae




Aspleniaceae



Hemidictyaceae







Thelypteridaceae




Woodsiaceae





Onocleaceae



Blechnaceae




Athyriaceae







References[edit]

  1. ^ a b c 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. 
  2. ^ a b c 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): 490–509. doi:10.1093/sysbio/sys001. PMID 22223449. 
  3. ^ 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. 
  4. ^ Samuli Lehtonen (2011). Steinke, Dirk, ed. "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.