Vientiane prov., Kasi distr., between Pa Chao and Nam Ken villages, Pa Chao Mt., around point 19°19'50.6''N 102°21'20.5''E. Secondary broad-leaved evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 1000-1100 m a.s.l. Epiphyte on mossy trees on shady steep rocky slope. Occasional. LA-VN 1752 26 March 2017 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.
Fl. in cult. 1 Oct. 2018. Flowers with strong sweet, rather unpleasant smell; sepals and petals pale yellow with many small brown-purple spots; lip white with yellow center; column purple; anther white with yellow tint. Photos L. Averyanov.
Coordinates (geographic position):19° 19′ 50.6″ N, 102° 21′ 20.5″ E ±1000 mRecord creation: 2019-01-11, Leonid Averyanov, Microtek 1600. Processing status: work_status_1Citation: Specimen LE 01048679 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01048679