| Family | Parkeriaceae |
| Scientific name | Coniogramme intermedia Hieronymus |
| Synonyms | Coniogramme fraxinea (D. Don) Diels var. intermedia (Hieronymus) C. Christensen; Coniogramme intermedia Hieronymus var. glabra Ching |
| Common name | (Japanese common name) iwagane-zen-mai [iwagane-sou like zen-mai (iwagane-sou = Coniogramme japonica, zen-mai = Osmunda japonica)] |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia, Korea, China, SE Asia | |
| Chromosomal number | n=60, 2n=120 (also 2n=90 in China) |
| Description | Evergreen. Terrestrial. Perennial plants. |
| September 2006 at Tsukuba Botanical Garden |
September 2006 at Tsukuba Botanical Garden |
| September 2006 at Tsukuba Botanical Garden |
September 2006 at Tsukuba Botanical Garden |