Biology:Metaxya

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Short description: Genus of ferns

Metaxya
Metaxya rostrata 2.jpg
Metaxya rostrata
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Cyatheales
Family: Metaxyaceae
Pic.Serm.
Genus: Metaxya
C.Presl
Type species
Metaxya rostrata
(Kunth) C.Presl
Species

See text.

Metaxya distribution.PNG
Metaxyaceae distribution
Synonyms
  • Amphidesmium Schott 1834 ex Kunze

Metaxya is a neotropical genus of ferns in the order Cyatheales. It is the only genus in the family Metaxyaceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I).[1] Alternatively, the genus may be placed in the subfamily Metaxyoideae of a more broadly defined family Cyatheaceae,[2] the family placement used in Plants of the World Online (As of November 2019).[3]

The species of the genus are characterized by large fronds that approach 8 ft (2.5 m) in length.

Species

(As of January 2023), Plants of the World Online accepted the following species:[3]

Image Scientific name Distribution
Metaxya contamanensis Tuomisto & G.G.Cárdenas Peru to Bolivia
Metaxya elongata Tuomisto & G.G.Cárdenas Belize, Colombia, Costa Rica, Guatemala, Honduras, Panamá, Venezuela
Metaxya lanosa A.R.Sm. & Tuomisto Peru, Venezuela (Amazonas) to Guyana.
14938-Metaxya rostrata-Tabaro.jpg Metaxya rostrata (Kunth) C.Presl Mexico (Chiapas), Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guatemala, Guyana, Honduras, Nicaragua, Panamá, Peru, Suriname, Trinidad-Tobago, Venezuela
Metaxya scalaris Tuomisto & G.G.Cárdenas Brazil, French Guiana, Guyana, Suriname, Venezuela

Phylogeny

Phylogeny of Metaxya[4][5]

M. parkeri (Hooker & Greville) Smith

M. rostrata (Kunth) Presl

M. scalaris Tuomisto & Cárdenas

M. lanosa Smith & Tuomisto

M. contamanensis Tuomisto & Cárdenas

M. elongata Tuomisto & Cárdenas

References

  1. 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. 
  2. 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. PMID 24532607. 
  3. 3.0 3.1 "Metaxya C.Presl". Plants of the World Online. Royal Botanic Gardens, Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:17147700-1. 
  4. Nitta, Joel H.Expression error: Unrecognized word "et". (2022). "An Open and Continuously Updated Fern Tree of Life". Frontiers in Plant Science 13: 909768. doi:10.3389/fpls.2022.909768. PMID 36092417. 
  5. "Tree viewer: interactive visualization of FTOL". 2023. https://fernphy.github.io/viewer.html. 

External links

Wikidata ☰ {{{from}}} entry