Metaxya

Genus of ferns

Metaxya
Metaxya rostrata
Scientific classification Edit this classification
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.

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[update].[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[update], 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.
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. S2CID 39980610.
  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. PMC 3936591. PMID 24532607.
  3. ^ a b "Metaxya C.Presl". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-11-25.
  4. ^ Nitta, Joel H.; Schuettpelz, Eric; Ramírez-Barahona, Santiago; Iwasaki, Wataru; et al. (2022). "An Open and Continuously Updated Fern Tree of Life". Frontiers in Plant Science. 13: 909768. doi:10.3389/fpls.2022.909768. PMC 9449725. PMID 36092417.
  5. ^ "Tree viewer: interactive visualization of FTOL". FTOL v1.4.0 [GenBank release 253]. 2023. Retrieved 8 March 2023.
  • Media related to Metaxya at Wikimedia Commons
  • Data related to Metaxya at Wikispecies
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Classification of Archaeplastida or Plantae s.l.
Domain
Archaea
Bacteria
Eukaryota
(major groups
Excavata
Diaphoretickes
Hacrobia
Cryptista
Rhizaria
Alveolata
Stramenopiles
Plants
Amorphea
Amoebozoa
Opisthokonta
Animals
Fungi
Mesomycetozoea)
Archaeplastida
Picozoa
Rhodelphidia
Rhodophyta
(red algae)
Glaucophyta
incertae sedis
Viridiplantae
or Plantae s.s.
(green algae &
land plants)
Prasinodermophyta
 Chlorophyta
Prasinophytina
Chlorophytina
Streptophyta
Phragmoplastophyta
Anydrophyta
Embryophyta
(land plants)
  • (see below↓)
Embryophytes or Plantae sensu strictissimo
Bryophytes
Marchantiophyta
(liverworts)
Anthocerotophyta
(hornworts)
Bryophyta
(mosses)
 Polysporangiophytes
Protracheophytes*
Tracheophytes
(vascular plants)
Paratracheophytes*
Eutracheophytes
Lycophytes
Euphyllophytes
Moniliformopses
Lignophytes
Progymnosperms*
  • †Noeggerathiopsida
  • †Aneurophytopsida
  • †Archaeopteridopsida
  • †Protopityales
Spermatophytes
(seed plants)
Pteridosperms*
(seed ferns)
and other extinct
seed plant groups
Acrogymnospermae
(living gymnosperms)
Angiospermae
(flowering plants)
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Fern classification
  • Supergroup Plant:
  • Bryophyta
  • Marchantiophyta
  • Polypodiophyta
  • Acrogymnospermae
  • Angiospermae
Basal clade
Cladoxylopsida
  • †Cladoxylales
    • †Cladoxylaceae
    • †Voelkeliaceae
  • †Hyeniales
    • †Hyeniaceae
  • Iridopteridales
    • †Iridopteridaceae
  • Pseudosporochnales
    • †Pseudosporochnaceae
  • †Steloxylales
    • †Steloxylaceae
Polypodiopsida
†Stauropterididae
†Zygopterididae
Equisetidae
Equisetales
  • †Asterocalamitaceae
  • †Autophyllitaceae
  • †Honseleriaceae
  • Archaeocalamitaceae
  • †Paracalamitaceae
  • Calamitaceae
  • †Apocalamitaceae
  • †Konnostachyaceae
  • †Manchurostachyaceae
  • †Notocalamitaceae
  • †Schizoneuraceae
  • †Sorocaulinaceae
  • †Echinostachyaceae
  • †Gondwanostachyaceae
  • †Tchernoviaceae
  • Equisetaceae
Ophioglossidae
Psilotales
Ophioglossales
Marattiidae
Marattiales
  • †Knorripteridaceae
  • †Pecopteridaceae
  • †Ptychocarpaceae
  • †Weichseliaceae
  • †Asterothecaceae
  • †Danaeopsidaceae
  • Marattiaceae
Polypodiidae
  • †Anachoropteridales
    • †Anachoropteridaceae
    • †Psalixochlaenaceae
    • †Sermayaceae
  • †Botryopteridiales
    • †Botryopteridiaceae
  • †Senftenbergiales
    • †Senftenbergiaceae
  • †Urnatopteridales
    • †Crossothecaceae
    • †Discopteridaceae
    • †Urnatopteridaceae
Osmundales
Hymenophyllales
Gleicheniales
Schizaeales
Salviniales
Cyatheales
Thyrsopteridineae
Cyatheineae
Polypodiales
Saccolomatineae
Lindsaeineae
Pteridineae
Dennstaedtiineae
Aspleniineae
Polypodiineae
Taxon identifiers
Metaxya
Metaxyaceae
Stub icon

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