Son La Prov., Van Ho Distr., Van Ho comm., Hua Tat village, around point 20°46′21.7N 104°47′47.5E. Dense bamboo forest on alluvial slope of remnant mountain composed with highly eroded karstic light gray marble-like limestone at elevation about 1100 m a.s.l. Terrestrial root parasite. Flowers purple. Not common. 2 October 2016 CPC 8239 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.V.Maisak, N.T.Son.
Coordinates (geographic position):20° 46′ 21.7″ N, 104° 47′ 47.5″ E ±1000 mRecord creation: 2021-12-02, Tatiana Maisak, PhotoScan D2Citation: Specimen LE 01077676 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01077676