Diplaziopsidaceae is a family of ferns in the order

Polypodiales The order Polypodiales encompasses the major lineages of polypod ferns, which comprise more than 80% of today's fern species. They are found in many parts of the world including tropical, semitropical and temperate areas. Description Polypodiale ...

. In the

Pteridophyte Phylogeny Group The Pteridophyte Phylogeny Group, or PPG, is an informal international group of systematic botanists who collaborate to establish a consensus on the classification of pteridophytes ( lycophytes and ferns) that reflects knowledge about plant relatio ...

classification of 2016 (PPG I), the family is placed in the suborder

Aspleniineae Aspleniineae is a suborder of ferns in the order Polypodiales. It is equivalent to the clade eupolypods II in earlier systems; it is also treated as a single very broadly defined family Aspleniaceae. The suborder generally corresponds with the o ...

, and includes two genera. Alternatively, it may be treated as the subfamily Diplaziopsidoideae of a very broadly defined family

Aspleniaceae The Aspleniaceae (spleenworts) are a family of ferns, included in the order Polypodiales. The composition and classification of the family have been subject to considerable changes. In particular, there is a narrow circumscription, Aspleniaceae ...

. They are described as medium-to-large ferns, which grow near streams in forested areas. Their rhizomes are thick and

decumbent This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary o ...

to erect. Species are found in east Asia, from China south to

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; id, Papua, or , historically ) is the world's second-largest island with an area of . Located in Oceania in the southwestern Pacific Ocean, the island is separated from Australia by the wide Torr ...

and east into the Pacific.

Taxonomy

Maarten J. M. Christenhusz Dr Maarten Joost Maria Christenhusz (born 27 April 1976) is a Dutch botanist, natural historian and photographer. Career He was born in Enschede, the Netherlands, received his undergraduate and master's degrees from Utrecht University in ...

and Xuan-Chun Zhang originally described the family in 2011 by including three genera ''

Diplaziopsis ''Diplaziopsis'' is a genus of ferns in the family Diplaziopsidaceae. The genus name means 'like ''Diplazium. Species , the ''Checklist of Ferns and Lycophytes of the World'' and ''Plants of the World Online Plants of the World Online (PO ...

'', ''

Hemidictyum ''Hemidictyum'' is a genus of ferns with a single species, ''Hemidictyum marginatum'', commonly known as the marginated half net fern. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is the only genus in the family Hemidic ...

'', and '' Homalosorus''. Later that year

Samuli Lehtonen Samuli is a settlement in Kenya's Rift Valley Province Rift Valley Province ( sw, Mkoa wa Bonde la Ufa) of Kenya, bordering Uganda, was one of Kenya's eight provinces, before the Kenyan general election, 2013. Rift Valley Province was the lar ...

found ''Hemidictyum'' to be a sister to

, so ''Hemidictyum'' was placed in its own family, Hemidictyaceae. Christenhusz and Mark W. Chase later included ''Hemidictyum'' in their subfamily

Asplenioideae The Aspleniaceae (spleenworts) are a family of ferns, included in the order Polypodiales. The composition and classification of the family have been subject to considerable changes. In particular, there is a narrow circumscription, Aspleniaceae s ...

rather than their subfamily Diplaziopsidoideae.

Genera

Two genera are accepted in the PPG I classification, and by the ''Checklist of Ferns and Lycophytes of the World'' : *''

'' C.Chr. – three species *'' Homalosorus'' Small ex Pic. Serm. – one species

Phylogenetic relationships

The following cladogram for the suborder

(as eupolypods II), based on Lehtonen, 2011, and Rothfels & al., 2012, shows a likely

phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...

relationship between the Diplaziopsidaceae and the other families of the clade.

References

{{Taxonbar, from=Q2014294 Polypodiales Fern families