Houphan Prov., Viengxay Distr., Xieng Luong village, around point 20°22'06.1''N 104°17'18.6''E.
Primary and secondary broad-leaved evergreen dry forest on very steep rocky slopes of highly eroded mountains composed by solid marble-like limestone at elev. 600-700 m a.s.l.
Lithophytic herb on mossy rocks and on high cliff on mountain tops. Flowers rich yellow, lip with dark chestnut spot in center. Common.
Record creation: 2021-11-12, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01122944 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01122944