FLORA OF VIETNAM Convallariaceae Ophiopogon sp. Cao Bang Prov., Nguyen Binh Distr., Yen Lac Municipality, Chi Doi village, around point 22°45'34"N, 105°51'48.7"E. Primary fractionally logged coniferous forest with Pseudotsuga sinensis along highly eroded rocky limestone ridge at elevation about 1400 m a.s.l. Clustering herb with leaves to 1 m (and more) long on shady rocks in middle part of mountain slope. Not ripe fruits dark glossy green. Not common. 5 October 2013 CPC 5429 L.Averyanov, N.T.Hiep, L.M.Tuan, N.S.Khang, T.Maisak, L.Osinovets (Living plant collected)