Piper mestonii F.M.Bailey

Dioecious vine; hairs minute, transparent, sparse on most surfaces. Leaves with petioles 1–8.5 cm long; lamina broadly to narrowly ovate, 12–27 cm long, 2–20 cm wide, upper surface glabrous; base rounded, cuneate or cordate; apex acuminate; secondary veins 2 or 3, spaced along both sides of basal half of midvein. Male spikes not seen. Female spikes solitary, leaf-opposed, erect; rachis glabrous; peduncle 1–4 cm long; bracts shortly peltate. Flowers cream. Stigmas 2 (or 3); styles prominent, to 2 mm long. Fruit cylindrical, tapering apically, 2–6 cm long (–12 cm in New Guinea), 1–1.7 cm diam., red and fleshy when mature. Seeds numerous, closely packed within compound fruit.

Climbing over tree roots and tree trunks, often along creek and river banks in rainforest and dense mixed swamp forest in lowland areas to 350 m alt.