FLORA OF LAOS Convallariaceae Peliosanthes densiflora Aver. & N. Tanaka 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. Clustering terrestrial and lithophytic herb with erect to suberect many branching rhizome on steep rocky slope. Leaves to 80 cm long, petiole 30-45 cm long, leaf blade glossy uniform green on both sides 25-35 cm long, 6-10 cm wide. Not rare. LA-VN 421 14 March 2013 Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, P.V.The, S.Lorphengsy