Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23º03ʹ13.4ʺN 104º51ʹ48.8ʺE, at elevation 1050-1150 m a.s.l., steep slopes of stream valley composed with eroded stratified highly eroded limestone. Primary evergreen broad-leaved very humid forest. Terrestrial and lithophytic herb in open mossy place along stream and on wet rocky slopes. Epiphyte on mossy tree along stream. Rare. 21 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 546a.
Flowered in 6 July 2018. Flowers dull yellow, sepals and epichile red-brown spotted. Photo. L. Averyanov.
Coordinates (geographic position):23° 3′ 13.4″ N, 104° 51′ 48.8″ E ±1000 mRecord creation: 2019-01-13, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01048906 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01048906