Houphan Prov., Viengxay Distr., Vieng Xai village, around point 20°23'41.3''N 104°13'44.5''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. 800-950 m a.s.l.
Epiphyte on small trees in shady steep slope. Flowers light yellowish, tepals with brown-purple marks hypochile yellowish with dull brown marks, epichile white with yellowish central spot, and few brownish spots at apex. Locally common.
Record creation: 2021-02-05, Аверьянов Леонид Владимирович. Processing status: work_status_1Citation: Specimen LE 01089447 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01089447