Hemidictyum

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Hemidictyum
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Hemidictyaceae
Christenh. & H.Schneid.
Genus: Hemidictyum
C.Presl [1]
Species:
H. marginatum
Binomial name
Hemidictyum marginatum
Synonyms [2]
  • Allantodia marginataRacib.
  • Asplenium limbatumWilld.
  • Asplenium marginatumL.
  • Asplenium mikaniiC.Presl
  • Athyrium marginatumMilde
  • Diplazium giganteumKarst.
  • Diplazium limbatum(Willd.) Proctor
  • Diplazium marginatumDiels
  • Hemidictyum limbatum(Willd.) C.Presl
  • Hemidictyum peruvianumC.Presl
Hemidictyum marginatum plant Hemidictyum marginatum inat.jpg
Hemidictyum marginatum plant

Hemidictyum is a genus of ferns with a single species, Hemidictyum marginatum, commonly known as the marginated half net fern. [3] In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is the only genus in the family Hemidictyaceae. [4] Alternatively, the family, along with Aspleniaceae sensu stricto , may be placed in a much more broadly defined family Aspleniaceae as the subfamily Asplenioideae. [5]

Contents

Taxonomy

The name Hemidictyum was derived from the terms hemi (half) and diktyon (net), from the veins being netted only half-way across the pinnules. [6]

Phylogenetic relationships

Hemidictyaceae is considered to be a sister family to Aspleniaceae s.l., believed to have diverged during the Cretaceous period. [7] [8] The following cladogram for the suborder Aspleniineae (as eupolypods II), based on Lehtonen (2011), [9] and Rothfels & al. (2012), [10] shows a likely phylogenetic relationship between the Hemidictyaceae and the other families of the clade.

Aspleniineae
(eupolypods II)

Species

There is currently only one accepted Hemidictyum species, Hemidictyum marginatum. [1]

Distribution

Hemidictyum is a native neotropical fern, found in Mexico, the Caribbean, Costa Rica, Guatemala, Honduras, Nicaragua, Panama, French Guiana, Suriname, Brazil, Venezuela, Puerto Rico, Bolivia, Colombia, Ecuador, and Peru. [3] [11]

References

  1. 1 2 "HemidictyumC.Presl". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-11-28.
  2. 1 2 "Hemidictyum marginatum(L.) C.Presl". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-11-28.
  3. 1 2 NRCS. "Hemidictyum marginatum". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 4 Feb 2012.
  4. ↑ PPG I (2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution. 54 (6): 563–603. doi: 10.1111/jse.12229 . S2CID   39980610.
  5. ↑ Christenhusz, Maarten J.M. & Chase, Mark W. (2014). "Trends and concepts in fern classification". Annals of Botany. 113 (9): 571–594. doi:10.1093/aob/mct299. PMC   3936591 . PMID   24532607.
  6. ↑ The Fern Manual, being a description of all the best stove, greenhouse and hardy ferns by contributors to the Journal of Horticulture p.69, London, 1863
  7. ↑ 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. doi:10.11646/phytotaxa.19.1.2.
  8. ↑ 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. hdl:10138/28050.
  9. ↑ Samuli Lehtonen (2011). "Towards Resolving the Complete Fern Tree of Life". PLOS ONE. 6 (10) e24851. Bibcode:2011PLoSO...624851L. doi: 10.1371/journal.pone.0024851 . PMC   3192703 . PMID   22022365.
  10. ↑ 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.
  11. ↑ "Hemidictyum marginatum". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 12 January 2018.


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