Cyathea

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Cyathea
Cyathea.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Cyatheales
Family: Cyatheaceae
Genus: Cyathea
J. E. Smith, 1793
Species

See text.

Synonyms [1]
List
  • AcantheaLindig
  • ActinophlebiaC.Presl
  • AmphicosmiaGardner
  • ChnoophoraKaulf.
  • CnemidariaC.Presl
  • CnemidopterisRchb.
  • CormophyllumNewman
  • ×CyathidariaCaluff & Shelton
  • DichorexiaC.Presl
  • DispheniaC.Presl
  • EatoniopterisJ.Bommer
  • FournieraJ.Bommer
  • GymnopremnonLindig
  • HemistegiaC.Presl
  • HemiteliaR.Br.
  • HymenophyllopsisK.I.Goebel
  • MicrostegnusC.Presl
  • NepheleaR.M.Tryon
  • SchizocaenaJ.Sm.
  • ThysanobotryaAlderw.
  • TrachypremnonLindig
  • TrichipterisC.Presl

Cyathea is a genus of tree ferns, the type genus of the fern order Cyatheales.

Contents

The genus name Cyathea is derived from the Greek kyatheion, meaning "little cup", and refers to the cup-shaped sori on the underside of the fronds.

Description

The species of Cyathea are mostly terrestrial ferns, usually with a single tall stem. Rarely, the trunk may be branched or creeping. Many species also develop a fibrous mass of roots at the base of the trunk.

The genus has a pantropical distribution, with over 470 species. They grow in habitats ranging from tropical rain forests to temperate woodlands.

Classification

Conant et al. in 1996, concluded on molecular cpDNA and morphological evidence that a system of three clades – Alsophila, Cyathea and Sphaeropteris was the most accurate reflection of evolutionary lineages within the Cyatheaceae, Alsophila being the most basal and Cyathea and Sphaeropteris derived sister groups. [2] In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), these are accepted as separate genera, Alsophila , Cyathea and Sphaeropteris . [3] CnemidariaPresl, 1836 is a junior synonym or redundant subset. [4] [5]

Species

As of July 2021, World Ferns (Version 12.3) accepted the following species: [6]

Extinct species

Eocene Cyathea inequilateralis Chuckanut Formation, Washington Cyathea inequilateralis SRIC img2.jpg
Eocene Cyathea inequilateralis Chuckanut Formation, Washington

Related Research Articles

<i>Cheilanthes</i> Genus of ferns

Cheilanthes, commonly known as lip ferns, is a genus of about 180 species of rock-dwelling ferns with a cosmopolitan distribution in warm, dry, rocky regions, often growing in small crevices high up on cliffs. Most are small, sturdy and evergreen. The leaves, often densely covered in trichomes, spring directly from the rootstocks. Many of them are desert ferns, curling up during dry times and reviving with the coming of moisture. At the ends of veins sporangia, or spore-bearing structures, are protected by leaf margins, which curl over them.

<i>Sphaeropteris</i> Genus of ferns

Sphaeropteris is a genus of tree ferns in the family Cyatheaceae. It has been treated as a subgenus within the genus Cyathea, but is accepted in the Pteridophyte Phylogeny Group classification of 2016.

Alsophila hermannii, synonym Cyathea christiiCopel., is a species of tree fern endemic to Mindanao in the Philippines, where it grows in forest at an altitude of 900–1800 m. The trunk is erect and may be 5 m tall or more. Fronds are bi- or tripinnate and 2–3 m long. The stipe is covered with some warts and narrow, brown scales. Sori occur near the midvein of fertile pinnules and are covered by thin, fragile indusia.

<i>Alsophila</i> (plant) Genus of ferns

Alsophila is a genus of tree ferns in the family Cyatheaceae. It has also been considered to be a section in the subgenus Cyathea of the genus Cyathea.

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<i>Lellingeria</i> Genus of ferns

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<i>Amauropelta</i> Genus of ferns

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<i>Serpocaulon</i> Genus of ferns

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References

Dried Cyathea podophylla. Dried Cyathea podophylla.jpg
Dried Cyathea podophylla .
  1. Cyathea Sm. Plants of the World Online . Retrieved 20 December 2023.
  2. Conant, D.S.; Raubeson, L.A.; Attwood, D.K.; Perera, S.; Zimmer, E.A.; Sweere, J.A.; Stein, D.B. (1996). "Phylogenetic and evolutionary implications of combined analysis of DNA and morphology in the Cyatheaceae". In Camus, J.M.; Gibby, M.; Johns, R.J. (eds.). Pteridology in perspective. Kew, U.K.: Royal Botanic Gardens. pp. 231–248. ISBN   9781900347099.
  3. 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.
  4. Braggins, John E. and Large, Mark F. Tree Ferns. Timber Press (2004). ISBN   0-88192-630-2
  5. Cnemidaria world species list
  6. Hassler, Michael (2004–2021), "Genus Cyathea J.E.Sm.", World Ferns. Synonymic Checklist and Distribution of Ferns and Lycophytes of the World. Version 12.3, retrieved 2021-07-25

Notes

    Bibliography