FLORA OF LAOS
Orchidaceae
Arundina caespitosa Aver.

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 159.1, 9 December 2015 L.Averyanov, T.Maisak. Living specimens.
Lithophytic dense-clustering herb on sandstone stream rocks. Flowers purple. Locally very common.