Hemidictyum
| Hemidictyum | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Division: | |
| Class: | |
| Order: | |
| Family: |
Hemidictyaceae
Christenh. & H. Schneider. 2011
|
| Genus: |
Hemidictyum
C.Presl 1836
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| Species: |
H. marginatum
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| Binomial name | |
| Hemidictyum marginatum (L.) C.Presl
|
|
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Hemidictyaceae is a family of ferns in the order Polypodiales.[1] Its sole genus is ''Hemidictyum'' C.Presl 1836, commonly known as the "marginated half net fern."[2] Hemidictyaceae is considered to be a sister family to Aspleniaceae, believed to have diverged during the Cretaceous period.[3][4]
The name Hemidictyum was derived from the terms hemi (half) and diktyon (net), from the veins being netted only half-way across the pinnules.[5]
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.[2][6]
Species
There is currently only one accepted Hemidictyum species name, Hemidictyum marginatum. The other names are considered to be synonyms, either of that species, or of accepted Asplenium species:[7]
- Hemidictyum marginatum (L.) C.Presl 1836
- Hemidictyum purdieanum (Hook.) T.Moore 1857
- Hemidictyum finlaysonianum (Wall. ex Hook) T.Moore 1857
Phylogenic relationships
The following diagram for the eupolypods II, based on Lehtonen, 2011,[8] and Rothfels & al., 2012,[9] shows a likely phylogenic relationship between the Hemidictyaceae and the other families of the eupolypods II clade.
| eupolypods II |
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References
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- ↑ 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
- ↑ Hemidictyum marginatum USDA-ARS Germplasm Resources Information Network (GRIN) 25 Jul 2002
- ↑ Hemidictyum Tropicos.org. Missouri Botanical Garden. 04 Feb 2012
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