Son La Prov., Moc Chau Distr., Chieng Son comm., Pha Luong village, Pha Luong Mountain (elevation from Pha Luong village at 930 m to Mt. peak at 1860 m a.s.l.).
Primary and secondary evergreen broad-leaved forest on steep mountain slopes composed with highly eroded red-brown sandstone at elevation 1600-1700 m a.s.l. around point 20°40′23.0N 104°37′52.0E.
Tree to 30-35 m tall. Common. Co-dominant of first forest stratum.
23 September 2016 CPC 7984 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.V.Maisak, N.T.Son. Other dominants if first forest stratum, observed, but not collected: Diplopanax vietnamensis Castanopsis sp. Cinnamomum sp. Litsea sp. Eberhartdtia sp. Lithocarpus sp. Gordonia sp. Anacardiaceae sp. (like Spondias) Sloanea sp. Levistona chinensis? Acer sp.