| Family | Orchidaceae |
| Subfamily | Orchidoideae |
| Tribe | Orchideae |
| Scientific name | Amitostigma keiskei (Maxomovicz) Schlechter |
| Synonyms | Gymnadenia gracilis (Blume) Miquel var. keiskei Finet; Gymnadenia keiskei Maximovicz; Orchis keiskei (Schlechter) Soó |
| Common name | (Japanese common name) iwa-chidori (イワチドリ, 岩千鳥 [meaning: rock plover birds orchid]), oh-iwa-chidori (オオイワチドリ, 大岩千鳥 [meaning: large rock plover birds orchid]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (Central region, Kinki region), Shikoku |
| (Other nations) none | |
| Habitat | Rocks near mountain stream or small valley |
| Chromosomal number | unknown |
| Description | Plants electing 8-15cm tall. Leaves 3-7cm long, 6-15mm wide. Flowers pueple, pink or white sepals ca. 4mm, lips ca. 1cm, flowerting in April to May. Terrestrial or lithophyte on rocks around mountane rivers. Perennial plants. |
| Reference | Amitostigma keiskei Schltr. 1919 |
| Note | Endemic to Japan. |
| Rare species. | |
| There are many flower varieties. These varieties have been cultivated and protected mainly by private people. |
| May 2008 at my home |
May 2008 at my home |
| May 2009 at my home |
May 2009 at my home |
| May 2008 at Kochi Prefecture Makino Botanical Garden |
May 2008 at Kochi Prefecture Makino Botanical Garden |
May 2008 at Kochi Prefecture Makino Botanical Garden |
| April 2009 at my home |