Thunbergia mildbraediana

Thunbergia mildbraediana is a herbaceous climbing plant that can reach up to 2 meters in length. It is a perennial species. Its stems are sparsely pilose, with dense hairs forming two distinct bands.

Leaves. The leaves are non-winged on their petioles, which measure 2–6 cm long, and are similarly covered with sparse pilosity. The leaf blades are triangular-ovate, ranging from 4.5 to 10.5 cm long and 2–5.5 cm wide, with an acuminate apex, a deeply cordate base, and sagittate lobes. The margins are subentire to coarsely dentate, and the underside of the leaves has denser pilosity along the veins.

Flowers. The flowers of Thunbergia mildbraediana are axillary and solitary, with pedicels that measure 4–9 cm long and are sparsely pilose. The bracteoles are green, ovate to narrowly so, 2.7–3.5 cm long, with prominent veins and reticulation. These bracteoles are acute to acuminate at the apex and distinctly cordate with a 4-angular base. The calyx is puberulous, with stalked capitate glands and occasionally intermixed hairs. The rim of the calyx is 1–2 mm high, with linear segments 3–6 mm long. The corolla is typically white with a reddish-purple throat, although some rare variations may feature a pale yellow throat. The tubular portion of the corolla is 5–12 mm long, while the campanulate throat is 1.3–2.5 cm long and 1–1.5 cm in diameter. …

Thunbergia mildbraediana can be found within the African countries of Burundi, Congo, Rwanda, Tanzania and Uganda. The species grows in countries that exhibit wet tropical climates. It utilizes mountainous habitat where it inhabits both rainforests and bamboo forests. Plants have been found at elevations ranging from 750 to 2,950 metres above sea level.