Tuyen Quang Prov., Na Hang Distr., Sinh Long Municipality, Khuoi Phin village, around point 22°38'21"N, 105°20'28"E. Primary evergreen mixed humid forest on rocky limestone on highly eroded karstic hills composed with gray solid marble-like limestone at elevation 1100-1200 m a.s.l. Terrestrial erect herb to 1 m tall in shady rocky place. Flowers white with light violet tint. Very common to abundant. 30 September 2013 CPC 5339. L.Averyanov, N.T.Hiep, L.M.Tuan, N.S.Khang, D.V.Cuong, N.V.Truong.T.Maisak, L.Osinovets
Coordinates (geographic position):22° 38′ 21″ N, 105° 20′ 28″ E ±1000 mRecord creation: 2019-02-22, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01049358 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01049358