''Pteridrys'' is a genus of

fern The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissue ...

s in the family

Tectariaceae Tectariaceae is a family of leptosporangiate ferns in the order Polypodiales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Polypodiineae. Alternatively, it may be treated as the ...

, according to the

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

classification of 2016 (PPG I).

Taxonomy

The genus ''Pteridrys'' was erected by Carl Christensen and

Ren-Chang Ching Ren-Chang Ching (; 15 February 1898 – 22 July 1986), courtesy name Zinong, was a Chinese botanist who specialised in ferns. Life and work Ren-Chang Ching was a Chinese botanist and pteridologist who made significant collections of plants from ...

in 1934. The

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

is '' Pteridrys syrmatica'', transferred from ''Aspidium syrmaticum''. A 2016

molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

showed ''Pteridrys'' to be related to two new genera, ''

Draconopteris ''Draconopteris'' is a genus of ferns in the family Tectariaceae, with a single species ''Draconopteris draconoptera'', according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Taxonomy The genus ''Draconopteris'' was e ...

'' and ''

Malaifilix ''Malaifilix'' is a genus of ferns in the family Tectariaceae, with a single species ''Malaifilix grandidentata'', according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Taxonomy The genus ''Malaifilix'' was erected i ...

'', separate from the clade containing ''

Tectaria ''Tectaria'' is a genus of fern in the family Tectariaceae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Halberd fern is a common name for species in this genus. Species , the ''Checklist of Ferns and Lycophyt ...

''.

Species

, the ''Checklist of Ferns and Lycophytes of the World'' recognized the following species: *'' Pteridrys acutissima'' Ching ex C.Chr. & Ching *'' Pteridrys australis'' Ching ex C.Chr. & Ching *'' Pteridrys cnemidaria'' (Christ) C.Chr. et. Ching *'' Pteridrys confertiloba'' Holttum *'' Pteridrys costularis'' Li Bing Zhang, Liang Zhang, N.T.Lu & X.M.Zhou *'' Pteridrys dongshiyongii'' Li Bing Zhang & X.M.Zhou *'' Pteridrys dorsifixa'' Li Bing Zhang & X.M.Zhou *'' Pteridrys hanoiensis'' Li Bing Zhang, Liang Zhang, N.T.Lu & X.M.Zhou *'' Pteridrys lofouensis'' (Christ) C.Chr. & Ching *'' Pteridrys microthecia'' (Fée) C.Chr. & Ching *'' Pteridrys olivacea'' (Rosenst.) Copel. *'' Pteridrys syrmatica'' (Willd.) C.Chr. & Ching *'' Pteridrys vietnamensis'' Li Bing Zhang, Liang Zhang, N.T.Lu & X.M.Zhou

References

Tectariaceae Fern genera Taxa named by Ren-Chang Ching {{Polypodiales-stub