Climbers to 12 m tall. Branches robust, grayish black, glabrous. Petiole ca. 2 cm, rugose, glabrous; leaf blade oblong, 15-20 × 6-8 cm, papery, abaxially grayish white and sparsely puberulent, adaxially glabrous, secondary veins 13-16 on each side of midvein, reticulate veins apparent, base obtuse to rounded, apex obtuse to acute. Inflorescences leaf-opposed or terminal, 1-3-flowered; peduncle ca. 1.5 cm; bracts triangular. Pedicel ca. 2 cm, puberulent, with triangular bract at base. Sepals triangular, outside puberulent. Petals ovate, ca. 1.5 × 1 cm, puberulent; inner petals slightly smaller than outer petals. Stamens oblong, ca. 2.5 mm; connectives broadly triangular, apex obtuse. Carpels many, cylindric, ca. 5 mm, villous; ovules ca. 30 per carpel, in 2 series; styles oblique, glabrous; stigmas 3-angular, apex entire. Fruit not seen. Fl. Mar-May, fr. Jun-Aug.
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A climbing shrub. It grows 12 m long. The leaves are oblong and 15-20 cm long by 6-8 cm wide. They are greyish white underneath. The flowers are opposite the leaves or at the end. There are 1-3 flowers in a group.
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