| Family | Orchidaceae |
| Subfamily | Orchidoideae |
| Tribe | Orchideae |
| Subtribe | Orchidinae |
| Scientific name | Platanthera hologlottis Maximowicz |
| Synonyms | Habenaria glossophora W. W. Smith; Limnorchis hologlottis (Maximowicz) Nevski; Platanthera glossophora (W. W. Smith) Schlechter; Platanthera hologlottis Maximowicz var. glossophora (W. W. Smith) K. Inoue |
| Common name | (Japanese common name) mizu-chidori (ミズチドリ, 水千鳥 [meaning: water plover birds orchid]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia (Far East), Korea, China | |
| Habitat | Swamp |
| Chromosomal number | 2n=42 |
| Description | Plants 50-90cm tall. Leaves 10-20cm long, 1-2cm widw. Flowers inflorescences 10-20cm long, white mid sepals 4-5mm long, white seide sepals 6-7mm long, white lip petals 6-8cm long, white spurs 10-12mm long, flowering in June to July. Terrestrial. Perennial plants. |
| Reference | Platanthera hologlottis Maxim. |
| June 2006 at Naruto Swamp |
June 2006 at Naruto Swamp |
June 2006 at Naruto Swamp |