Glabrous herb, probably perennial; stems slender, twining.. Leaf-blade orbicular in outline, palmately divided to the base, up to 5 cm. in diameter, often much less; lobes 5, elliptic, obtuse and apiculate, the outer ones often bilobed, 2.6–4 cm. long, about 1 cm. wide; petiole 4.5 cm. long; pseudo-stipules present.. Flowers axillary, solitary or in 2–3-flowered inflorescences; peduncle 4.5 cm. long; pedicels slender 1.7 cm. long.. Sepals elliptic or almost orbicular, 2–5 mm. long, 1.3–2.5 mm. wide, obtuse but mucronulate, often tuberculate.. Corolla rose-purple or dark mauve, funnel-shaped, 8–17 mm. long.. Capsule globose, 8 mm. in diameter.. Seeds brown, subglobose, 4–5.5 mm. long, velvety-pubescent, the edges with long white cottony hairs 5–10 mm. long.
Leaf-lamina circular in outline, palmately divided to the base, up to 5 cm. in diam., often much less; lobes elliptic to lanceolate 2·6–4 × 1 cm. usually obtuse and apiculate at the apex and narrowed and subpetiolued at the base, the outer ones often 2-lobed; petiole 4–5 cm. long; pseudostipules present resembling the leaves but much smaller.
Flowers axillary, solitary or in 2–3-flowered inflorescences; peduncle 4–5 cm. long, very slender, almost filiform; pedicels slender but thicker than the peduncle, more or less 1·7 cm. long, somewhat subclavate; bracteoles minute.
Sepals elliptic or almost orbicular, 3–5 mm. long, subequal with membranous edges, usually obtuse but mucronulate, often muriculate.
Seeds subglobose, brown, velvety-pubescent, with 5–10 mm. long white cottony hairs at the edges.
Corolla funnel-shaped, rose-purple or dark mauve, 8–17 mm. long.
Stems very slender, twining or sometimes prostrate.
Annual or perennial glabrous herb.
Capsule globose, glabrous.