FLORA OF VIETNAM
Orchidaceae
Anoectochilus calcareus Aver.

Ha Giang prov., Quan Ba distr., Tung Vai commune, Thung Pang village, around point 23°04ʹ38.6ʺN 104°56ʹ06.8ʺE, steep rocky slopes near hill top composed with stratified highly eroded limestone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest. Lithophytic herb on mossy shady rocks. Not rare. 17 October 2018, L. Averyanov, Nguyen Sinh Khang, T. Maisak, Truong Duc Thieu, VR 900.2 (LE01057891). Herbarium specimen prepared in 23 July 2019, L. Averyanov, tepals reddish-brown with white tips, lip white, side lobes reddish, anther red.