Ha Giang Prov., Quan Ba Distr., Can Ty Commune, Sin Suoi Ho Village, around point 23.09566°N 105.02142°E. Very steep mountain slopes composed of solid highly eroded karstic limestone at elevation 800–1000 m a.s.l. Remnants of primary evergreen broad-leaved and coniferous (with Calocedrus rupestris and Xanthocyparis vietnamensis) humid forest. Terrestrial rhizomatous herb in shady place among rocks. Leaves dark green with many unclear yellowish spots (sometime uniform green). Old flowers looks black. Occasional. 11 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1552 (HN, LE01067027, LE01070146).