Blechnum occidentale in cultivation at Lotusland, Montecito, California
Scientific classification
Kingdom:
Plantae
Clade:
Tracheophytes
Division:
Polypodiophyta
Class:
Polypodiopsida
Order:
Polypodiales
Suborder:
Aspleniineae
Family:
Blechnaceae
Subfamily:
Blechnoideae
Genus:
Blechnum L.
Type species
Blechnum occidentale
L.
Species
See text.
Blechnum, known as hard fern, is a genus of ferns in the family Blechnaceae, subfamily Blechnoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I).[1] Two very different circumscriptions of the genus are used by different authors. In the PPG I system, based on Gasper et al. (2016),[2]Blechnum is one of 18 genera in the subfamily Blechnoideae, and has about 30 species.[1] Other sources use a very broadly defined Blechnum s.l., including accepting only two other genera in the subfamily. The genus then has about 250 species.[3] In the PPG I circumscription, the genus is mostly neotropical, with a few southern African species.
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Blechnum, known as hard fern, is a genus of ferns in the family Blechnaceae, subfamily Blechnoideae, according to the Pteridophyte Phylogeny Group classification...
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South America. Blechnum scaberulum and Blechnum sodiroi have been regarded as separate species, but are now regarded as synonyms of Blechnum occidentale...
Struthiopteris spicant, syn. Blechnum spicant, is a species of fern in the family Blechnaceae, known by the common names hard-fern or deer fern. It is...
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Blechnum is a genus of ferns. Two very different circumscriptions of the genus are used by different authors. In the Pteridophyte Phylogeny Group classification...
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Oceaniopteris gibba, the miniature tree fern (syn. Blechnum gibbum), is a tropical species of fern in the family Blechnaceae, native to New Caledonia and...
(2010). Morphology of the sporophyte and gametophyte of the swamp fern, Blechnum serrulatum (Blechnaceae, Pteridophyta). Australian Journal of Botany, 58(6)...
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Lomaria discolor, synonym Blechnum discolor, commonly called crown fern (Māori: piupiu), is a species of fern in the family Blechnaceae. This species is...
Lomariocycas tabularis, synonym Blechnum tabulare, known as the mountain blechnum is a large, attractive fern that is indigenous to sub-saharan Africa...
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paraphyletic genus Blechnum, when that genus is broadly circumscribed. Christenhusz et al., 2011, therefore reassigned all Doodia species to Blechnum. Doodia media...
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Austroblechnum durum, synonym Blechnum durum, is a species of fern in the family Blechnaceae. The fern is endemic to New Zealand. Thomas Moore described...
arrangement may change from the base of a blade to the tip, as in the example of Blechnum shown below (from base to tip: pinnae opposite to alternate, and pinnatisect...
into a very broadly defined Blechnum, equivalent to the whole of the PPG I subfamily; the species is then known as Blechnum brasiliense. It is called Brazilian...
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