Phou Khao Khouay National Protected Area to about 40 km NE of Vientiane. Dry evergreen primary and secondary forest along rocky stream on sandstone at elev. 350 m a.s.l. AL 159 9 December 2015 L.Averyanov, T.Maisak. Living specimens. Lithophytic adpressed leafless herb. Plant in fruits. Very common.