N.Vietnam, Cao Bang Prov., Trung Khanh Distr., Ngoc Khe Municipality, Pac Nga village, around point 22є54'59''N, 106є31'44''E, at elevation 800-850 m a.s.l. Remnants of primary broad-leaved evergreen and coniferous forest along rocky tops of rocky ridges and mesae composed with light gray solid marble-like highly eroded crystalline limestone. Tree 4-8(12) m tall. Common. Occasional co-dominant of 1-2 forest stratum.
Record creation: 2026-10-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01360716 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01360716