Dicksoniaceae
1893868
225682938
2008-07-14T21:51:26Z
83.223.165.225
{{Taxobox
| name = Dicksoniaceae
| image = Cibotium-menziesii.jpg
| image_width = 250px
| image_caption = ''Cibotium menziesii''
| regnum = [[Plant]]ae
| divisio = [[Pteridophyta]]
| classis = [[Pteridopsida]]
| ordo = [[Cyatheales]]
| familia = '''Dicksoniaceae'''
| familia_authority = Bower, ''nom. cons''.
| subdivision_ranks = [[Genus|Genera]]
| subdivision =
''[[Calochlaena]]''<br>
''[[Dicksonia]]''<br>
''[[Lophosoria]]''<br>
†''[[Conantiopteris]]''<br>
†''[[Coniopteris]]''<br>
†''[[Erboracia]]''<br>
†''[[Lophosoriorhachis]]''<br>
†''[[Nishidicaulis]]''<br>
†''[[Onychiopsis]]''
}}
The '''Dicksoniaceae''' is a [[family (biology)|family]] of tropical, subtropical and warm temperate [[fern]]s. Most of the 5-6 [[genus|genera]] in the family are terrestrial ferns or have very short trunks compared to [[tree fern]]s of the family [[Cyatheaceae]]. However, some of the larger species can reach several metres in height. A number of others are [[epiphyte]]s. They are found mostly in [[tropical]] regions in the [[Southern Hemisphere]], as far south as southern [[New Zealand]].
==Morphology==
Species in the family are generally characterized by large pinnate [[frond]]s, 1–4 m long. The family includes several species of tree ferns, which grow a single trunk, notably the species in ''[[Dicksonia]]''. All members of the family have long, tapering hairs composed of cells arranged end to end, unlike the scales characteristic of the Cyatheaceae.
==Evolution==
The ferns of family Dicksoniaceae are generally regarded as more primitive than those of the family Cyatheaceae, having originated in the early [[Jurassic]] period.
==Diversity==
Only 3 extant [[genus|genera]] are recognised in this [[monophyletic]] family:
* ''[[Calochlaena]]''
* ''[[Dicksonia]]''
* ''[[Lophosoria]]''
==See also==
* [[Cyatheales]]
==References==
* [http://www.jaknouse.athens.oh.us/ferns/classfra.html Classification of Ferns and Allies]
* Braggins, J. E. and Large, M. F. (2004). ''Tree Ferns''. Timber Press. ISBN 0-88192-630-2
*Smith, A.R., K.M. Pryer, E. Schuettpelz, P. Korall, H. Schneider & P.G. Wolf 2006. {{PDFlink|[http://www.pryerlab.net/publication/fichier749.pdf A classification for extant ferns.]|420 [[Kibibyte|KiB]]<!-- application/pdf, 430863 bytes -->}} ''Taxonomy'' '''55'''(3): 705-731.
{{commonscat}}
[[Category:Plant families]]
[[Category:Pteridophyta]]
[[id:Dicksoniaceae]]
[[de:Dicksoniaceae]]
[[es:Dicksoniaceae]]
[[nl:Dicksoniaceae]]
[[pt:Dicksoniaceae]]