Oncinotis glabrata is a plant in the family Apocynaceae. It grows as a climbing shrub or liana up to long, with a stem diameter of up to . Its fragrant flowers feature a yellow to greenish yellow corolla. The fruit consists of paired follicles, each up to long. Its habitat is forests from sea level to altitude. Local medicinal uses include as a treatment for yaws sores. Oncinotis glabrata is native to an area from Guinea in the west to Tanzania in the east and south to Angola.
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