Vietnam, Thua Thien – Hue Prov., A Luoi Distr., Hong Kim Municipality, Dut village, about 3 km to NE from point 16°17′54′'N, 107°12′41′'E near A Nor waterfall at elevation about 700-800 m a.s.l.
Secondary closed broad-leaved forest along shady rocky stream canyon composed with shale and granite.
Terrestrial herb up to 3.5 m tall. Flowers brightly red, flower bracts purple. Locally very common.