Scandent shrub; leaves opposite, subsessile, variable in shape, elliptic-ovate to orbicular or suborbicular, sometimes even narrowly lanceolate, cordate at base, acuminate at apex, glabrous; flowers in supra-axillary or terminal, corymbose cymes; bracts prominent; calyx campanulate, glabrous; corolla deep red to crimson, hypocrateriform showy, lobes rounded, tube long, slender; stamens 4, much exserted, didynamous, filaments very long, anther cells-2, parallel; ovary imperfectly 4-celled, 4-ovuled, style filiform, stigma bifid; drupe globose or obovoid, somewhat 4-lobed, separating into 4-pyrenes, black shining; seeds small, oblong.