Description
Uvaria concava is characterized by its scrambling or climbing habit, often reaching considerable lengths as it ascends other vegetation. Its leaves are simple, alternate, and generally ovate to elliptic, with an acuminate (tapering to a point) apex and a rounded or slightly cordate base. The texture of the leaves can be papery to thinly coriaceous.
The flowers are typically solitary or arranged in small fascicles (clusters) in the leaf axils. They are generally yellowish to cream-colored and possess the characteristic six petals in two whorls, common in the Annonaceae family, with inner petals often smaller than the outer ones. The flowers are usually fragrant.
The fruit is an aggregate fruit (syncarp) composed of several monocarpic drupelets, which are typically ovoid or ellipsoid and often constricted between the seeds, giving them a somewhat "concave" or "pustulate" appearance, which may be reflected in the specific epithet concava. When ripe, the fruits usually turn reddish or orange.
Distribution and Habitat
Uvaria concava is endemic to various parts of Southeast Asia, including countries such as Thailand, Peninsular Malaysia, Sumatra, Borneo, and other Indonesian islands. It commonly grows in primary and secondary evergreen forests, mixed deciduous forests, and along forest margins, often at lower to moderate altitudes.
Uses
While not extensively cultivated, Uvaria concava has some traditional uses within its native range:
- Edible Fruit: The ripe fruits are sometimes collected and eaten locally, known for a sweet-sour taste, though they are generally small.
- Traditional Medicine: In some traditional medicinal practices, parts of the plant, such as the roots or leaves, are used for various ailments, though scientific validation for these uses is often limited.
Taxonomy
Uvaria concava was formally described by George King. It belongs to the genus Uvaria, which is a large genus within the custard-apple family (Annonaceae), known for its diverse species of climbers and shrubs.