<p>Distribution: Russian Far East to S. Korea, Japan to Nansei-shoto (Amami Is.)
31 KHA PRM 36 CHM CHS 38 JAP KOR NNS
Found in
Asia-Temperate China China Southeast, Manchuria, Eastern Asia Japan, Korea, Nansei-shoto, Russian Far East Khabarovsk, Primorye
</p><p>Homotypic Synonyms:
</p>
<ul><li>Serapias longifolia Thunb., Fl. Jap.: 28 (1784), nom. illeg.</li></ul><p>Epipactis longifolia Blume, Coll. Orchid.: 185 (1859), nom. illeg.
Limodorum thunbergii (A.Gray) Kuntze, Revis. Gen. Pl. 2: 671 (1891).
Helleborine thunbergii (A.Gray) Druce, Bull. Torrey Bot. Club 36: 547 (1909).
Amesia thunbergii (A.Gray) A.Nelson &amp; J.F.Macbr., Bot. Gaz. 56: 473 (1913).
Helleborine longifolia Soó, Ann. Hist.-Nat. Mus. Natl. Hung. 26: 380 (1929), nom. illeg.
Epipactis gigantea var. thunbergii (A.Gray) M.Hiroe, Orchid Flowers 1: 63 (1971).
Arthrochilium thunbergii (A.Gray) Szlach., Orchidee (Hamburg) 54: 588 (2003).
(* Basionym/Replaced Synonym)
</p><p>Heterotypic Synonyms:
Epipactis gigantea var. manshurica Maxim. ex Kom., Trudy Imp. S.-Peterburgsk. Bot. Sada 20: 524 (1901).
Helleborine chinensis Soó, Ann. Hist.-Nat. Mus. Natl. Hung. 26: 380 (1929).
Epipactis thunbergii var. manshurica (Maxim. ex Kom.) Tang &amp; F.T.Wang, Acta Phytotax. Sin. 1: 67 (1951).
Epipactis thunbergii f. subconformis Sakata, J. Jap. Bot. 35: 224 (1960).
</p>
Epipactis thunbergii f. flava Ohwi, Fl. Jap., ed. rev.: 1438 (1965).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/25064784@N00">snotch</a> from Sapporo, Hokkaido, Japan
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/snotch/35106874503/">Epipactis thunbergii 'Koshi no Homare' (Niigata, Japan) A.Gray, M.C.Perry, Exp. Jap. 2: 319 (1856)</a>