Ha Giang Prov., Bac Me Distr., Phieng Luong municipality, around Phieng Luong village. Primary broad-leaved humid evergreen forest on very steep slopes and along rocky ridge composed with solid crystalline highly eroded limestone at elevation 1100-1150 m a.s.l. around point 22°38′07.1″N 105°19′22.1″E. Terrestrial herb on very steep humid shady rocky slope at middle part of mountain slope. Fruits glossy dark green with blue tint. Locally common. 13 November 2014 CPC 7429 / TM 1105 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, T.Maisak, L.Osinovetz Flowered in July 2017, flowers dull olive-greenish. L. Averyanov 28 July 2017.