Gymnosphaera dimorpha

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

Gymnosphaera dimorpha, synonyms Alsophila dimorpha and 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. ^ a b c Hassler, Michael. "Gymnosphaera". World Ferns. Retrieved 2024-12-16.
  2. ^ a b Large, Mark F. & Braggins, John E. (2004). Tree Ferns. Timber Press. p. 124. ISBN 978-0-88192-630-9.


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