Herbaceous or woody climbers. Leaves entire, ovate or circular, cordate; densely glandular beneath (the glands appearing as black dots in dried specimens).
Inflorescences pedunculate cymes. Sepals 5, enlarging in fruit. Corolla red or purple, funnel-shaped.
Fruit a spherical capsule, completely enclosed by the much enlarged calyx. Seeds 4, pubescent.
Pericarp thin, breaking irregularly. Worldwide: 9 species in the tropics Zimbabwe: 1 cultivated taxon. |
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