Vientiane Prov., Vang Vieng Distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang Mt., around point 18°55′51.4”N 102°23′50.6”E. Dry broad-leaved primary and secondary evergreen forest on very steep rocky slopes and on vertical cliffs of remnant highly eroded rocky limestone mountains composed by solid crystalline limestone at elevation 300-400 m. Terrestrial herb with erect stem to 5 cm tall on shady slope. Leaves uniform green, to 1 m long, petiole 30-50 cm long, leaf blade elliptic to 50 cm long 15 cm wide. Rare. LA-VN 410a 14 March 2013 (living only) Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, P.V.The, S.Lorphengsy Fl. in cult. in October – November 2015. Flowers with chloroform smell, white, tepals violet at apices.