Johnstonia, a new genus of Gouanieae (Rhamnaceae) from Peru

Climbers with tendrils in the flowering branches. Leaves sparse, elliptic, entire, 3-nerved, petiolate. Flowers in axillary, sessile, 2-flowered inflorescences. Floral tube hemispherical; sepals 5, triangular, externally pubescent; petals 5, concave; stamens 5, with the anthers hooded by the petals; disk flat, unlobed; ovary inferior, trilocular, with solitary ovules in each loculus, style 3-branched, stigmas club-shaped. Fruit schizocarp, giving rise to three