FLORA OF LAOS NEW. Convallariaceae. Ophiopogon regnieri Bois. Xiangkhouang Prov., Kham Distr., Huad village, Phou tat Vinh mt., around point 19°32'31.6'N 103°39'40.4'E. Primary and secondary broad-leaved evergreen and semideciduous dry forest on very steep rocky slopes of limestone highly eroded mountains composed by solid marble like limestone at elev. 1200-1400 m a.s.l. Terrestrial and lithophytic herb on shady rocky mountain slope. Leaves with many dull yellowish transversely elliptic spots. Not rare. LA-VN 1045 / TM 1260 / 15158 4 April 2015. Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Pheng Phengsintham. Flowered in 25 May 2018. Flowers almost white. Photos. L. Averyanov