FLORA OF LAOS Orchidaceae Polystachya concreta (Jacq.) Garay & H.R.Sweet
Luang Prabang prov., Ngoy distr., Ngoy village, around point 20°42′52.9′'N 102°41′15.5′'E.
Remnants of primary evergreen forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 800-900 m a.s.l.
Epiphyte on tall mossy trees on rocky steep mountain slope. Occasional.