Vietnam, Ha Giang Prov., Quan Ba Distr, about 2 km to the NE of Quan Ba town, around point 23є05’49’’N, 105є01’00’’E at elevation about 1150 m a.s.l. Primary coniferous forest with Calocedrus rupestris, Callitropsis vietnamensis and Pseudotsuga sinensis on rocky highly eroded marble-like limestone remnant mountains. Shrub up to 2.5 m tall flowers brightly yellow, anthers brown. Not rare.