Dicksonia 878559 213592869 2008-05-20T00:15:43Z Mgiganteus1 808022 + boldface {{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]] {{fern-stub}} {{tree-stub}} [[de:Dicksonia]] [[es:Dicksonia]] [[pt:Dicksonia]] [[fr:Dicksonia]] [[nl:Dicksonia]]