N. Vietnam, prov. Cao Bang, distr. Nguyen Binh, municipality Ca Thanh (N 22°44′ E 105°50′). Primary semideciduous broad-leaved forest on steep slopes and bluffs of remnant karst limestone ridge at 1250-1300 m elev. Terrestrial herb in wet shady rock crevices. Spathe light green with central white spot. Middle part of inflorescence axis green, base and apical part brownish-purple. Stem and leaf petiole greenish-white with purple marks. Not rare.
CBL 1275 13 April 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)