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Blechnaceae

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Noun1.Blechnaceae - one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; includes genera Blechnum, Doodia, Sadleria, Stenochlaena, and Woodwardia
fern family - families of ferns and fern allies
Filicales, order Filicales, order Polypodiales, Polypodiales - true (leptosporangiate) ferns
Blechnum, genus Blechnum - in some classification systems placed in family Polypodiaceae; terrestrial ferns of cosmopolitan distribution mainly in southern hemisphere: hard ferns
genus Doodia, Doodia - in some classification systems placed in family Polypodiaceae; small terrestrial colony-forming ferns of Australasia
genus Sadleria, Sadleria - low tree ferns with large fronds; in rain forests and on lava flows of Hawaiian Islands
genus Stenochlaena, Stenochlaena - large tropical ferns; some epiphytic climbers and some terrestrial bog ferns; Africa; Asia; Australasia
genus Woodwardia, Woodwardia - in some classification systems placed in family Polypodiaceae: chain ferns


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However, they are useful in distinguishing Salpichlaena from other Blechnaceae genera because species of Salpichlaena have a poorly developed perispore (apparently one-layered in section) and a granulate-papillate-rugulated surface, whereas other Blechnaceae have a complex perispore that is psilate and generally folded.
The following families of this order, treated in this paper, are Aspleniaceae (spleenworts), Azollaceae (mosquito ferns), Blechnaceae (chain ferns), and Dennstaedtiaceae (bracken and hay-scented ferns).
 
 
 
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