FLORA OF LAOS Nakai-Nam Theun Protected Area 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.