Rubiaceae

Myrioneuron effusum (Pit.) Merr.

Hanoi Capital Region, Ba Vi National Park, old humid secondary evergreen broad-leaved forest on very steep mountain slopes composed by granite and shale at elevation of 700-850 m a.s.l. Undershrub 2-2.5 m tall on steep slope. Flowers yellow. Not rare.

9 May 2025, Cuong Huu Nguyen, Son Van Le, Ha Van Dang, Ly Van Nguyen, L. Averyanov, T. Maisak, AL4220 (NHC031).