Erect sparingly branched shrub, 1-4 m tall, non-sprouting. Branchlets densely tomentose and sparsely hirsute with dark red-brown hairs at flowering. Leaves in lower parts broadly obovate, flat, in flowering region cordate to depressed circular, oblique, concave, ±overlapping, ascending and cupped about stem, 3.7-7.5 cm long, 38-90 mm wide, crenulate or denticulate, sometimes undulate, acuminate, rarely obtuse, pale green. Inflorescence axillary or at leafless nodes, with 25-30 flowers; pedicels 5.5-8 mm long, glabrous. Perianth deep pink. Pistil 17-25 mm long; gland present. Fruit 1-5 per axil, obliquely ovate, 2.2-2.8 cm long, 1.4-1.7 cm wide. Seed obliquely elliptic, 16-19 mm long; wing extending broadly down one side of body only, blackish brown throughout.
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