Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23°03ʹ13.4ʺN 104°51ʹ48.8ʺE, 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 creeping herb on wet mossy place. Sepals brownish-green, lip yellow. Not common. 21 April 2018, L. Averyanov, Nguyen Sinh Khang, Nguyen Tien Hiep, Nguyen Quang Hieu, Chuong Quang Ngan, T. Maisak, VR 548 (HN, LE01054319).