Northern Vietnam, Ha Giang Prov., Quan Ba Distr., Nghia Thuan municipality, Xin Cai village, around point 23°07′38,5″N, 104°55′48,4″E, 1194 m a.s.l. Terrestrial climber on tree. Tepals green. NTH 6262 30 April 2011 Coll.: N.T.Hiep, Tu Bao Ngan, Giang Chia Pao