Dicksonia
878559
213592869
2008-05-20T00:15:43Z
Mgiganteus1
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{{Taxobox
| name = ''Dicksonia''
| image = Ferns.jpg
| image_width = 250 px
| image_caption = ''Dicksonia antarctica''
| regnum = [[Plant]]ae
| divisio = [[Pteridophyta]]
| classis = [[Pteridopsida]]
| ordo = [[Cyatheales]]
| familia = [[Dicksoniaceae]]
| genus = '''''Dicksonia'''''
| genus_authority = [[Charles Louis L'Héritier de Brutelle|L'Hér.]]
| subdivision_ranks = Species
| subdivision =
See text.
}}
'''''Dicksonia''''' is a genus of [[tree fern]]s 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 [[spore]]s.
The genus contains 20-25 species, distributed from [[Mexico]] to [[Uruguay]] and [[Chile]], [[St. Helena]], [[New Zealand]], [[Australia]], [[Indonesia]], [[New Guinea]], and the [[Philippines]]. New Guinea has the greatest diversity, with five species.
The most widely cultivated species of ''Dicksonia'' is the [[Dicksonia antarctica|Soft Tree Fern]] (''D. Antarctica'').
The genus was first described by [[Charles Louis L'Héritier de Brutelle]] in 1788. The name honors [[James Dickson (botanist)|James Dickson]], a prominent nurseryman and botanist.
== Species ==
* ''[[Dicksonia antarctica]]'', Soft Tree Fern, Tasmanian Tree Fern. Australia.
* ''[[Dicksonia arborescens]]'', [[Saint Helena|St. Helena]]
* ''[[Dicksonia archboldii]]'', New Guinea
* ''[[Dicksonia baudouini]]'', [[New Caledonia]]
* ''[[Dicksonia berteriana]]'', [[Juan Fernandez Islands]]
* ''[[Dicksonia blumei]]'', Indonesia, Philippines
* ''[[Dicksonia brackenridgei]]'', [[Fiji]], [[Samoa]]
* ''[[Dicksonia externa]]'', [[Juan Fernandez Islands]]
* ''[[Dicksonia fibrosa]]'', Woolly Tree Fern, Kuripaka or Wheki-ponga (in [[Maori language|Maori]]). 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 language|Portuguese]]). Southern Mexico through Central America and Northern South America to [[Bolivia]] and Uruguay.
* ''[[Dicksonia squarrosa]]'', New Zealand Tree Fern, Slender Tree Fern, Rough Tree Fern, Wheki. New Zealand.
* ''[[Dicksonia steubelii]]'', Northern [[Peru]].
* ''[[Dicksonia thyrsopteroides]]'', [[New Caledonia]].
* ''[[Dicksonia youngiae]]'', Bristly Tree Fern. Australia.
== References ==
* Braggins, John E. and Large, Mark F. ''Tree Ferns''. Timber Press, Inc. (2004).
* Lobin, Wolfram. List of the American Dicksonia Species. Scientific Authority of Germany, Bonn 2001.
==External links==
*[http://www.baumfarn.at/treefern Community: Care and propagation of Treeferns] (German/English)
[[Category:Pteridophyta]]
[[Category:Trees]]
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