Rubiaceae Tarennoidea wallichii (J. D. Hooker) Tirvengadum & Sastre
Laos, Khammoune prov., Boualapa distr., Langkhang village, steep southern slopes of sandstone ridge allied to the road from the north between points 17°34′02.2″N 105°42′42.6″E, 200 m and 17°34′51.1″N 105°43′01.2″E, 535 m a.s.l.
Primary lowland semideciduous and evergreen dry forest on very steep rocky slopes.
Tree to 15 m tall. Flowers pale yellow. Not rare.
15 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, AL 1072.