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Dicksonia

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Kingdom
  
Plantae

Order
  
Cyatheales

Scientific name
  
Dicksonia

Rank
  
Genus

Division
  
Pteridophyta

Family
  
Dicksoniaceae

Higher classification
  
Dicksoniaceae


Lower classifications
  
Dicksonia antarctica, Dicksonia sellowiana

Dicksonia is a genus of tree ferns in the order Cyatheales. It is regarded as related to Cyathea, but is considered more primitive, dating back at least to the Jurassic and Cretaceous periods. The fossil record includes stems, pinnules, and spores.

Contents

The genus contains 20-25 species, distributed from Mexico to Argentina, Uruguay and Chile, St. Helena, New Zealand, New Caledonia, Australia, Indonesia, New Guinea, and the Philippines. New Guinea has the greatest diversity, with five species.

An easily cultivated species of Dicksonia is D. antarctica, the soft tree fern.

The genus was first described by Charles Louis L'Héritier de Brutelle in 1788. The name honors James Dickson, a prominent nurseryman and botanist.

Tree fern dicksonia antarctica cutting back old fronds


Species

  • Dicksonia antarctica, Soft Tree Fern, Tasmanian Tree Fern. Australia.
  • Dicksonia arborescens, St. Helena (type species)
  • Dicksonia archboldii, New Guinea
  • Dicksonia baudouini, New Caledonia
  • Dicksonia berteriana, Juan Fernández Islands
  • Dicksonia blumei, Indonesia, Philippines
  • Dicksonia brackenridgei, Fiji, Samoa
  • Dicksonia externa, Juan Fernández Islands
  • Dicksonia fibrosa, Woolly Tree Fern, Kuripaka or Wheki-ponga. New Zealand.
  • Dicksonia grandis, New Guinea
  • Dicksonia herbertii, Northeastern Queensland, Australia
  • Dicksonia hieronymi, New Guinea.
  • Dicksonia lanata, Tuokuro. New Zealand.
  • Dicksonia lanigera, New Guinea.
  • Dicksonia mollis, Indonesia.
  • Dicksonia sciurus, New Guinea.
  • Dicksonia sellowiana, Xaxim, Samambaiuçu (in Portuguese). Southern Mexico through Central America and Northern South America to Bolivia and Uruguay.
  • Dicksonia squarrosa, Rough Tree Fern, Slender Tree Fern, New Zealand Tree Fern, Wheki. New Zealand.
  • Dicksonia steubelii, Northern Peru.
  • Dicksonia thyrsopteroides, New Caledonia.
  • Dicksonia youngiae, Bristly Tree Fern. Australia.

    • References

    Dicksonia Wikipedia
    (Text) CC BY-SA


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