FLORA OF VIETNAM Orchidaceae Calanthe densiflora Lindl. ?
Vietnam, Ha Giang Prov., Bac Me Distr., Phieng Luong Municipality, around Phieng Luong village about 4 km to SW of Phieng Luong Municipality headquarter 22°39′29″N, 105°19′35″E.
Slightly logged primary closed evergreen broad-leaved forest on slopes of remnant mountains composed with solid highly eroded crystalline and partially shale limestone at elev. about 900 m a.s.l.
Terrestrial and lithophytic herb in wet place along streamlet. Locally very common.