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 and lithophytic rosulate herb on very steep rocky slope near and along ridge edge. Fruits glossy blue. Common. 13 November 2014 CPC 7419 / TM 1082 / 13395 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, T.Maisak, L.Osinovetz
Flowered in 25 May 2018. Flowers dull pale violet. Photos. L. Averyanov