FLORA OF LAOS Nakai-Nam Theun Protected Area Rubiaceae Gardenia coronaria Buch.-Ham. 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. Deciduous tree 12-16 m tall on rocky slope. Flowers white, later yellow. Occasional. 15 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, AL 1091 (photo only).