Rubiaceae

Ophiorrhiza sp.

Thanh Hoa Province, Quan Hoa District, Nam Dong Community, Ban Lo Village, Ke Stream, the territory of Nam Dong National Reserve around point 22º25’46’’N 105º36’58’E. Old secondary broad-leaved evergreen humid forest on wet very steep alluvial slopes based on solid, marble-like highly eroded limestone at elevation of 600–650 m a.s.l.

Terrestrial and lithophytic herb to 0.4 m tall among shady rocks along stream. Flowers white with pink apex of tepals. Not rare.

05 May 2024, Nguyen Huu Cuong, Nguyen Van Ly, L. Averyanov, T. Maisak, AL3089.