FLORA OF VIETNAM
Cyperaceae
Carex oblanceolata T. Koyama
( = Carex trongii K.K. Nguyen)

Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Lung Vay village, around point 23°06ʹ02.6ʺN 105°03ʹ04.5ʺE, 1200-1305 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. Lithophytic sedge on shady vertical cliff. Not rare. 15 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 223 (HN, LE01054384).