Border area between Phieng Luong municipality (Ha Giang Prov., Bac Me Distr.) and Sinh Long municipalitiy (Tuen Quang Prov., Na Hang Distr.).
Primary broad-leaved humid evergreen and mixed forest on very steep slopes and along rocky ridge composed with solid crystalline highly eroded limestone at elevation 1100-1170 m a.s.l. around point 22°38′24.3″N 105°20′21.3″E.
Flowered in cultivation in July 2017. Flowers with light sweet fragrance; sepals and petals light yellow, lip rich yellow. Column light yellow, anther almost white with light yellow tint. 20 July 2017 L. Averyanov