Ha Giang Prov., Quan Ba Distr., Cao Ma Po Commune, Then Van 1 Village, Binh Mountain, around point 23.09452°N 104.84831°E, steep rocky slopes composed with highly eroded limestone at elevation 1400–1600 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest with plantation of “wild-grown” Amomum. Epiphytic vine to 2 m long on old mossy tree. Flowers white to white with light pink tint, corona purple. Common. 4 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1269 (HN, LE01061203, LE01066921).