Biology:Alsophila dimorpha

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Short description: Species of fern

Alsophila dimorpha
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Cyatheales
Family: Cyatheaceae
Genus: Alsophila
Species:
A. dimorpha
Binomial name
Alsophila dimorpha
Christ[1]
Synonyms[1]
  • Cyathea dimorpha (Christ) Copel.
  • (Christ) S.Y.Dong Gymnosphaera dimorpha

Alsophila dimorpha, synonym Cyathea dimorpha,[1] is a species of tree fern native to central and southeastern Sulawesi, where it grows at an altitude of 120–1700 m. The trunk is erect and 3–4 m tall. Fronds are pinnate to bipinnate and up to 2 m long. Fertile pinnules are reduced in size. The stipe is short and bears basal scales. The scales are narrow, glossy, dark and have pale edges. Indusia are absent.[2]

The specific epithet dimorpha refers to the strong morphological differences between fertile and sterile pinnules. Sterile pinnules are larger, while fertile pinnules are narrow, reduced and lobed.[2]

References

  1. 1.0 1.1 1.2 Hassler, Michael; Schmitt, Bernd (June 2019), "Alsophila dimorpha", Checklist of Ferns and Lycophytes of the World, 8, https://worldplants.webarchiv.kit.edu/ferns/, retrieved 2019-09-14 
  2. 2.0 2.1 Large, Mark F.; Braggins, John E. (2004), Tree Ferns, Timber Press, p. 124, ISBN 978-0-88192-630-9, https://archive.org/details/treeferns00mark/page/124 

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