Son La Prov., Yen Chau Distr., Muong Lum Municipality, Na Hat village around point 21°00′35”N 104°29′06”E. Primary coniferous forest with Pinus kwangtungensis and Calocedrus rupestris on very steep rocky slopes of remnant mountain composed with highly eroded solid limestone at elevation 1000-1150 m a.s.l. Lithophytic and epiphytic herb on vertical shady cliff. Common. CPC 1879 1 April 2011 Coll.: L.Averyanov, N.T.Hiep, T.B.Ngan.
Coordinates (geographic position):21° 0′ 35″ N, 104° 29′ 6″ E ±1000 mRecord creation: 2020-12-24, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01075640 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01075640