| Family | Dryopteridaceae |
| Scientific name | Matteuccia orientalis (Hooker) Trévisan |
| Synonyms | Matteuccia japonica (Hayata) C. Christensen; Onoclea orientalis (Hooker) Hooker; Pentarhizidium japonicum Hayata; Pentarhizidium orientale (Hooker) Hayata; Pteretis japonica (Hayata) Ching; Pteretis orientalis (Hooker) Ching; Pterinodes orientale (Hooker) Kuntze; Struthiopteris cavaleriana (C. Christensen) C. Christensen; Struthiopteris orientalis Hooker |
| Common name | (Japanese common name) inu-gansoku[false gansoku (gansoku = Matteuccia struthiopteris)] |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Korea, China, Taiwan, Nepal, Bhutan | |
| Chromosomal number | n=40, 2n=80 (2x) |
| Description | Leaves vegetative leaves 30-80cm length, 20-40cm width, sporophyll 20-50cm. Summer green. Terrestrial. |
| Reference | Matteuccia orientalis (Hook.) Trevis. |
| Matteuccia orientalis |
| May 2007 at mountane forest edge |
May 2007 at mountane forest edge |
May 2007 at mountane forest edge |
| May 2007 at mountane forest edge |
May 2007 at mountane forest edge |
| September 2007 at Tsukuba Botanical Garden |
March 2007 at Ushiku Forest Park |