Ha Giang prov., Quan Ba distr., Cao Ma Po commune, Chin Chu Lin village, around point 23°04ʹ47.2ʺN 104°48ʹ55.6ʺE, steep slopes and flattened top of mountain composed with sandstone at elevation 1800–1950 m a.s.l. Primary evergreen broad-leaved very humid forest. Terrestrial and lithophytic herb on open steep mossy slope. Flowers light blue, tepals with light yellow spot inside at center. Not rare. 21 October 2018, L. Averyanov, Nguyen Sinh Khang, T. Maisak, Truong Duc Thieu, VR 1172 (HN, LE01055362).