Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, around point 17°41’28”N 105°53’42.7”E.
Wet primary evergreen broad-leaved forest on shady humid clay slope of narrow stream canyon composed with solid crystalline limestone at elevation about 460 m a.s.l. Palm 3-4 m tall on stream slope. Not rare.