Nghe An Prov., Ky Son Distr., Na Ngoi Municipality, eastern slopes of Phu Xai Lai Leng Mountain. Primary and secondary broad-leaved forest on steep mountain slopes composed of sandstone and gray shale at elevation 1300-2000 m a.s.l. around point 19°12'54"N 104°12'01"E. Creeping terrestrial herb on shady steep slope. Leaves nearly almost black with median whitish stripe. Not common.
26 October 2013 CPC 6323a.
Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, L.M.Tuan, N.A.Trang, L.H.Dan. Fl. in cult. In July 2016. Flowers odorless, sepals and petals light olive green flushed with brownish to apex, lip white, spur and column reddish-brown, ovary and floral bract dull reddish-brown. Photos. L.Averyanov
Coordinates (geographic position):19° 12′ 54″ N, 104° 12′ 1″ E ±1000 mRecord creation: 2019-06-11, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01055087 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01055087