Quang Binh Prov., Minh Hoa Distr., Hoa Son municipality, Ka Xai Valley, around point 17°42′10.4”N 105°47′57.3”E.
Primary logged closed evergreen broad-leaved forest and woodland on wet shale valley at elevation about 402 m a.s.l.
Big evergreen tree, up to 35 x 0,6 m or more. Hairs ferrugineuse; stipular scar 1/3 of petiole; leaves glabrous above, ferruginose hairs beneath. Young fruits. Common.