Climbers to 8 m tall. Roots black, very aromatic. Branches dark gray to brown pubescent, glabrescent. Petiole 0.8-1.5 cm, blackish and transversely wrinkled when dried, pubescent; leaf blade oblong, obovate-oblong, or sometimes elliptic, 6-17.5 × 2-7.5 cm, thinly leathery, abaxially puberulent, adaxially glabrous, secondary veins 13-18 on each side of midvein and adaxially flat, base rounded to broadly cuneate, apex acute, rounded, or sometimes retuse. Inflorescences axillary, leaf-opposed, or extra-axillary, glomerulate, usually 3-7-flowered, yellowish pubescent; peduncle to 4 mm. Flowers small; pedicel to 1.5 cm, bracteolate between base and below middle. Flowers buds broadly 3-angular, apex acute. Sepals broadly triangular, outside pubescent. Outer petals ovate-elliptic, ca. 12 mm, outside densely fulvous pubescent, inside glabrous; inner petals oblong, ca. 9 mm, apex acuminate. Stamens oblong; connectives 3-angular, apex obtuse. Carpels oblong, villous; ovules 4-6 per carpel, in 2 series; stigma apex entire. Monocarp stipes to 2.5 cm, slender; monocarps globose, ca. 1.5 cm in diam., yellowish pubescent. Seeds reddish brown, ellipsoid, flat. Fl. Jan-Oct, fr. Mar-Dec.
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A cane or creeping plant. It has a woody texture. The shrub or vine is about 8 m long. The roots are grey or black. They have a smell when cut. The leaves are 6-17.5 cm long and 2-7.5 cm wide. The leaf has easy to see veins. The leaf is hairy underneath. The flowers are small and in fan shaped bunches. These have 3-7 flowers. There are 6 petals in 2 rings. The fruit are round. They are covered with fine yellow hairs. The fruit are 1.5 cm across.