Dak Nong Province, Dak Song District, Nam Nung Protected Area, dry evergreen broad-leaved submontane forest on basalt and sandstone at elevation 800-900 m a.s.l. Terrestrial aphyllous herb in open grassy wetland. Flowers blue. Locally common. 25 October 2019, L. Averyanov, Nguyen Van Canh, T. Maisak, AL 1184.