FLORA OF LAOS. Celastraceae. Euonymus sp. Vientiane Prov., Kasi Distr., Thong Mout village, around point 19°26'51.5"N 102°07'45.8"E. Primary broad-leaved evergreen forest on very steep rocky slopes and on vertical cliffs of remnant highly eroded rocky limestone mountains composed by solid crystalline stratified limestone at elevation 1550-1650 m. Shrub 4 m tall in rather open place along rocky humid stream valley. Flowers greenish. Common. LA-VN 593 20 March 2013. Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, P.V.The, S.Lorphengsy