FLORA OF VIETNAM. Fam. Orchidaceae. Biermannia calcarata Aver. N.Vietnam, Cao Bang Prov., Trung Khanh Distr., Ngoc Khe Municipality, Pac Nga village, around point 22°54'59"N, 106°31'44"E, at elevation 600-650 m a.s.l. Closed secondary broad-leaved evergreen wet forest on very steep rocky slopes of rocky ridges and mesae composed with light gray solid marble-like highly eroded crystalline limestone. Canopy epiphyte on shrubs 3-4 m tall in very wet shady mossy place. Flowers light yellowish. Rare. No HAL 5767 15 June 2004 (Photo). . Collectors: L.Averyanov, P.K.Loc, P.V.The, N.T.Vinh.
Coordinates (geographic position):22° 54′ 59″ N, 106° 31′ 44″ E ±1000 mRecord creation: 2019-06-11, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01055100 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01055100