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. Tree about 30 m tall and 0.75 m dbh on steep rocky slopes and on mountain tops. Not common.
Record creation: 2021-11-12, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01122720 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01122720