Quang Tri Prov., Huong Hoa Distr., Huong Viet municipality around point 16°51′06”N 106°34′38”E.
Partially destroyed primary broadleaved evergreen forest on very steep rocky slopes of remnant hills composed with solid highly eroded crystalline limestone at elev. about 600-700 m a.s.l.
Giant herb to 8 tall in wet depression between limestone hills. Inflorescences bracts yellow-orange with purple tint. Fruits green, often with violet-purple tint. Very common.