FLORA OF VIETNAM Convallariaceae Ophiopogon caulescens (Blume) Backer Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Lung Vay village, around point 23º05ʹ46.7ʺN 105º02ʹ53.1ʺE, 1100-1280 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on steep rocky slopes near mountain tops. Terrestrial and lithophytic herb with short rhizome in shady place. Flowers light violet. Common. 15 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 196.

All photos © L. Averyanov & K.S. Nguyen