FLORA OF LAOS Dipterocarpaceae Dipterocarpus alatus Roxb. ex G.Don?
Vientiane prov., Kasi distr., between San and Tham Tai villages, around point 19°17′47.9′'N 102°08′58.9′'E.
Secondary broad-leaved evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 900-1000 m a.s.l.
Tree 20-30 m tall on steep rocky slope. Common. Forest co-dominant.