FLORA OF VIETNAM
Orchidaceae
Eria calcarea V.N. Long & Aver.

Ha Giang prov., Quan Ba distr., Bat Dai Son commune, Bat Dai Son Nature Reserve, San Chu village, around point 23°08ʹ55.1ʺN 104°59ʹ45.7ʺE, 1100-1200 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on very steep rocky slopes. Lithophytic creeping herb on open mossy rocks. Occasionally epiphytic. Flowers pale yellow, lip brownish. Not rare. 13 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 087 (HN, LE01054076).