''Dennstaedtia wilfordii'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

fern A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes exce ...

in the family

Dennstaedtiaceae Dennstaedtiaceae is one of fifteen families in the order Polypodiales, the most derived families within monilophytes (ferns). It comprises 10 genera with ca 240 known species, including one of the world's most abundant ferns, ''Pteridium aquilin ...

.Flora of China Vol. 2-3 Page 156 溪洞碗蕨 xi dong wan jue ''Dennstaedtia wilfordii'' (T. Moore) Christ
/ref> It was formerly placed in the

monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

''Coptodipteris'' as ''Coptidipteris wilfordii''. It is native from Pakistan through China to Korea and Japan. Fungus '' Herpobasidium filicinum'' ( Eocronartiaceae family,

Platygloeales The Platygloeales are an order of rust fungi in the class Pucciniomycetes. It contains two families, the '' Eocronartiaceae'' and also the '' Platygloeaceae''. Order Platygloeales are monophyletic group (they have a common ancestor). The resul ...

order) is found on the fern in Japan.

References

Dennstaedtiaceae Flora of China Plants described in 1861 {{Polypodiales-stub