FLORA OF VIETNAM Convallariaceae Tupistra khangii sp.nov. Nghe An Prov., Ky Son Distr., Na Ngoi Municipality, eastern slopes of Phu Xai Lai Leng Mountain. Primary and secondary broad-leaved forest on steep mountain slopes composed of sandstone and gray shale at elevation 1300-1500 m a.s.l. around point 19°13’53.4’’N 104°12’09.7’’E. Terrestrial and lithophytic herb with leaves to 2 m long on very steep shady slopes along stream. Flowers white, fruits green to olive-green, 1-seeded. Very common at elevation 1300 m a.s.l. 26 October 2013 CPC 6344 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, L.M.Tuan, N.A.Trang, L.H.Dan