Hoa Binh Prov., Lac Son Distr., Tu Do Municipality, Mon village, around point 20°25’29”N 105°19’36”E.
Primary broadleaved forest on steep rocky slopes of remnant mountain composed with solid crystalline highly eroded limestone at elevation about 500-700 m a.s.l. Palm to 2 m tall in rather open place along trail. Flowers dull yellowish to dirty purple. Locally very common.