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.