Acranthera collina (Rubiaceae), a new species from Sarawak, Malaysia, on the island of Borneo, is described and illustrated. Acranthera collina resembles A. bullata Merr. but is easily distinguished by its ca. 10 pairs of lateral veins (vs. 13–15 pairs), 6-merous flowers (vs. 5-merous), golden yellow corolla (vs. red) and anthers ca. 5 mm long (vs. 10 mm long).
