FLORA OF LAOS Orchidaceae Agrostophyllum planicaule (Wall. ex Lindl.) Rchb.f.
Vientiane prov., Vang Vieng distr., Oa Hom village, around point 19°05′57.0′'N 102°23′19.9′'E.
Secondary broad-leaved evergreen and semideciduous dry forest with on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 650-750 m a.s.l.
Clustering epiphyte and occasional lithophyte on rocky mossy mountain top. Common.