Pentarhizidium
| Pentarhizidium | |
|---|---|
| Pentarhizidium orientale | |
| Scientific classification | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Division: | Polypodiophyta | 
| Class: | Polypodiopsida | 
| Order: | Polypodiales | 
| Suborder: | Aspleniineae | 
| Family: | Onocleaceae | 
| Genus: | Pentarhizidium Hayata 1928 | 
| Type species | |
| Pentarhizidium japonicum Hayata 1928 | |
| Species | |
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| Synonyms | |
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Pentarhizidium is a genus of two Asian fern species. These species have formerly been included in Matteuccia or Onoclea. Recent genetic analysis has determined that these two species form a discrete clade that is basal to the rest of this fern group, and so have been located in their own genus. P. orientale is sometimes grown as a garden plant.