Evolvulus convolvuloides (Willd. ex Schult.) Stearn (=E. campestris Brandegee)
Southern Vietnam, Ninh Thuan province, Thuan Bac district, Binh Tien village, near the border with Khanh Hoa province, Cam Ranh town area, Nui Chua National Park territory, around point 11.808801°N, 109.181737°E. Open secondary shrubs on flat sandy dunes along sea cost at elevation 2-30 m a.s.l. Terrestrial prostrate herb, flowers light blue. Locally common. 27 January 2019, L Averyanov, E. Averyanova, AL 483. Photos.