Ha Giang Prov., Quan Ba Distr., Cao Ma Po Commune, Then Van 1 Village, Binh Mountain, around point 23.09452ºN 104.84831ºE, 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. Erect terrestrial and lithophytic herb on steep rocky slope. Not common. 4 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1314 (HN).