Mouretia oblanceolata, discovered in central Vietnam, is described as a new species of the tribe Argostemmateae in the family Rubiaceae. The new species is most similar to Mouretia tonkinensis and… Click to show full abstract
Mouretia oblanceolata, discovered in central Vietnam, is described as a new species of the tribe Argostemmateae in the family Rubiaceae. The new species is most similar to Mouretia tonkinensis and M. vietnamensis but differs from them by the following traits: erect to sub-erect habit, abaxially glabrous, obcordate stipules, oblanceolate leaves, 12–16 pairs of lateral veins, terminal, umbrella-like, cymose inflorescences, deltoid calyx lobes, and revolute, deltoid to ovate corolla lobes. The formal description, including color illustrations and basic information of ecology, phenology and conservation status, and a key to all currently known species of the genus are provided here.
               
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