Hugonia planchonii is a liana with bright yellow flowers that are short-lived and stems producing alternate hooks that is endemic to countries in Tropical West Africa but also occurs in Cameroon and Gabon.

[1] It is within the Linaceae family.

In traditional medicine, leaves are obtained to make a regimen to treat bronchitis or cough[2] The species is a liana with brown stem that is hairy when young but glabrescent or with short hairs when matured, the stems have recurved hooks.

Leaves are stalked and shiny; stipules are pubescent and 5–10 mm long,[3] petiole is 3–6 mm long; leaf-blade lanceolate to obovate, the species has inconspicuous domatia or sometimes are without the one, the leaf-blade is 5–16 cm long and 2–5 cm wide, surface is slightly coriaceous while the upper surface is glabrous, around the midrib to lower surface, it is glabrescent to pubescent.

[3] Flowers are yellow and in axillary cymes; sepals are semi-erect, reddish and densely pubescent.