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Blechnum

Blechnum
Blechnum occidentale in cultivation at Lotusland, Montecito, California
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Blechnaceae
Subfamily: Blechnoideae
Genus: Blechnum
L.
Type species
Blechnum occidentale
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.

  1. ^ a b Cite error: The named reference PPGI was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference GaspDittSmitSali16 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference ChriChas14 was invoked but never defined (see the help page).

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