Abelmoschus is a genus of approximately fifteen species of flowering plants in the family Malvaceae (order Malvales), native to tropical Africa, Asia, and northern Australia. The genus was formerly included within Hibiscus but is now recognized as a distinct genus, separated on the basis of its deciduous calyx that splits along one side as the flower opens.
Members of the genus are annual or perennial herbaceous plants, typically growing to around 2 metres tall. The leaves are large — 10–40 cm long and broad — and palmately lobed with three to seven lobes of highly variable depth, ranging from barely lobed to cut almost to the leaf base. The flowers are showy, 4–8 cm in diameter, with five white to yellow petals that frequently bear a red or purple spot at the base of each petal, giving the blooms a distinctive dark eye. The fruit is a capsule 5–20 cm long containing numerous seeds.
The most economically significant member is Abelmoschus esculentus, okra, one of the world's most widely cultivated vegetables, grown for its tender seed pods. Abelmoschus caillei (West African okra) is closely related and important in West and Central African agriculture. Abelmoschus manihot (aibika) is a leafy vegetable across the Pacific and tropical Asia and also yields bast fibre comparable to jute. Abelmoschus moschatus (abelmosk) is cultivated for its musk-scented seeds, which yield ambrette seed oil used in perfumery as a natural musk substitute.
Abelmoschus species serve as larval food plants for certain Lepidoptera, including Chionodes hibiscella, recorded on A. moschatus.
Etymology
The name Abelmoschus derives from Arabic, meaning “father of musk” or “source of musk”, a reference to the strongly musk-scented seeds produced by several members of the genus, most notably A. moschatus.
Distribution
The genus is native to the tropics of Africa, Asia, and northern Australia. Individual species have been widely cultivated and naturalized beyond their native ranges, particularly okra (A. esculentus), which is now grown throughout tropical and subtropical regions worldwide.
Taxonomy Notes
Abelmoschus was formerly treated as a section of Hibiscus and is still closely allied to it within Malvaceae. The key distinguishing character is the calyx, which in Abelmoschus is spathaceous (splitting along one side and falling off as a unit when the flower opens), unlike the persistent, lobed calyx of Hibiscus. The genus name carries the authority of Medikus (Medik.), and the genus contains approximately 15 accepted species according to Plants of the World Online.
Cultural Uses
Several species are valued as food plants. The young seed pods and young leaves of multiple species are eaten as vegetables, with okra (A. esculentus) the most commercially important. Abelmoschus manihot (aibika) provides both leafy greens and bast fibre used like jute for rope and textiles. Abelmoschus moschatus is cultivated for its musk-scented seeds, which yield ambrette seed oil — a natural musk substitute used in perfumery — though contact with the plant can cause phytophotodermatitis in some individuals.
