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| May 2009 at my home |
| Family | Orchidaceae |
| Subfamily | Orchidoideae |
| Tribe | Orchideae |
| Subtribe | Orchidinae |
| Scientific name | Platanthera mandarinorum Reichenbach f. subsp. mandarinorum var. oreades (Franchet & Savatier) Koidzumi |
| Synonyms | Platanthera mandarinorum auct., non Reichenbach f.; Platanthera mandarinorum Reichenbach f. forma brachycentron (Franchet & Savatier) M. Hiroe; Platanthera mandarinorum Reichenbach f. var. brachycentron (Franchet & Savatier) Koidzumi ex K. Inoue; Platanthera mandarinorum Reichenbach f. var. oreades (Franchet & Savatier) T. Hashimoto; Platanthera oreades Franchet & Savatier; Platanthera oreades Franchet & Savatier var. brachycentron Franchet & Savatier |
| Common name | (Japanese common name) yama-sagi-sou (ヤマサギソウ, 山鷺草 [meaning: mountain heron weed]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia (Far East), Korea, China, Taiwan | |
| Habitat | Mountane field, swamp |
| Chromosomal number | unknown |
| Description | Plants 20-40cm tall. Leaves 5-11cm long, 10-25mm wide. Flowers pale green side sepals 6-8mm long, lip 7-9mm long, spurs 12-14mm long. Terrestrial. Perennial plants. |
| Reference | Platanthera mandarinorum Rchb. f. |
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| May 2009 at my home |
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| May 2009 at my home |
May 2009 at my home |
May 2009 at my home |
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| May 2009 at my home |
May 2009 at my home |
