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Schizaeaceae

Family of ferns From Wikipedia, the free encyclopedia

Schizaeaceae is a family of ferns in the order Schizaeales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it includes only two genera.[1] Alternatively, two families kept separate in PPG I, Lygodiaceae and Anemiaceae, may be included in Schizaeaceae (as the subfamilies Lygodioideae and Anemioideae)[2] so that the family has four genera.[3][4] In this approach, the Schizaeaceae of PPG I is treated as the subfamily Schizaeoideae.[2]

Quick facts Scientific classification, Genera ...
Schizaeaceae
Schizaea cf. bifida from Waratah Track, Ku-ring-gai Chase National Park, Australia
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Schizaeales
Family: Schizaeaceae
Kaulf.
Genera[1]

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Distribution

Species are mainly distributed in the tropics, but several are found in temperate regions in North America, South Africa, Australasia and Northeast Asia.[5][6]

Description

The sporangia are borne on specialised pinnae, distinct from ordinary vegetative pinnae. The pinnae form small comb-like, pinnate structures on which the sporangia are formed.[citation needed]

Genera

In the narrow circumscription of the family, there are two genera:[1]

Two further genera are included in the broader circumscription:[3]

  • Anemia Sm. – otherwise placed in the monotypic family Anemiaceae
  • Lygodium Sw. – otherwise placed in the monotypic family Lygodiaceae

Extinct Genera

References

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