Son La Prov., Yen Chau Distr., Muong Lum Municipality, Na Hat village, around point 21°00′37″N 104°30′06″E. Broad-leaved (and former coniferous forest with Calocedrus rupestris) evergreen forest on steep slopes and on tops of ridge composed with rocky crystalline solid marble-like highly eroded limestone at elev. 900 m a.s.l. Creeping lithophyte on shady rocky slope. Flowers white to yellowish, lip dirty violet. Very common. HAL 9552c 05 Nov. 2006 Coll.: Nguyen Tien Hiep, L.Averyanov, Pham Van The.
Coordinates (geographic position):21° 0′ 37″ N, 104° 30′ 6″ E ±1000 mRecord creation: 2020-10-06, Leonid Averyanov, PhotoScan D2. Processing status: work_status_1Citation: Specimen LE 01073607 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01073607