FLORA OF VIETNAM
Orchidaceae
Calanthe lyroglossa Rchb.f.

Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349°N 104.86446°E, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial and lithophytic creeping herb on very steep shady stream slope. Locally very common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1445 (HN, LE01061063, LE01066791).