Erect, climbing or prostrate annual or perennial, mostly branched, 15–80 cm., glabrous.. Tendrils 2–10 cm., or absent.. Leaf-blades unlobed or deeply (2–)3-lobed, lanceolate to broadly ovate, 1–12 by 0.5–4 cm., base subtruncate to narrowly cuneate or attenuate, top subobtuse to acute-acuminate; lobes elliptic to oblong; margin serrate-dentate with teeth up to 2 mm.; petiole (0.1–)0.5–5(–7) cm., usually narrowly to broadly winged and with small gland-teeth.. Stipules 3–11 mm. False stipules absent.. Inflorescences 1–2-flowered; peduncle (0.5–)1–4 cm.; bracts 1–3 mm.. Flowers glabrous; stipe 3–8(–10) mm.. Hypanthium 1.5–4 mm. wide.. Sepals 5–11 mm., ± obtuse.. Petals 2–7 mm.. Outer corona-tube 1.5–2 mm., threads 1.5–2.5 mm.. Disk 0.2–0.5 mm.. Inner corona cup-or funnel-shaped, 0.6–2 mm.. Stamens 5; filaments 2–3.5 mm.; anthers 1–4 mm.. Ovary 0.6–2.5 mm.; styles free or up to 1 mm. connate, (1–)1.5–4 mm.. Fruit (excluding the up to 5 mm. long gynophore) 1–1.8 cm., containing 1–5 seeds.. Seeds ± 6 mm.
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