Shrub or small tree (1.5) 2.5–12 m. high, much-branched, sometimes subscandent. Branches spreading or pendulous, dark purple, buff-pubescent at first, eventually glabrous. Leaves petiolate; lamina 7.5–20 (24) x 3.5–8.2 (8.7), obovate to oblanceolate (or oblong when young), obtuse or rounded to apiculate or shortly acuminate at the apex, cordate at the base, membranous or subcoriaceous, bluish-green and concolorous or glaucous below, ± densely and softly pubescent on both sides or almost glabrous, usually with ciliate margin, with nerves and reticulate venation ± prominent on both sides; petiole 2–3 (5) mm. long, often blackish, softly pubescent. Flowers solitary, terminal or extra-axillary appearing with the young leaves; pedicel 2–5.7 (7.3) cm. long, slender, pubescent; bracteole ovate, attenuate, ± amplexicaul, glabrous above, appressed-pubescent below. Sepals c. 1–2 cm. long, lanceolate or narrowly triangular, acute or attenuate, recurved with undulate margins, ± densely sericeous-pubescent below, almost glabrous above. Petals yellow to greenish-white, variously flushed with pink or red to dark brown, or the inner ones wholly reddish, the outer ones (3) 3.7–6.5 cm. long, 0.5–1.8 (2.6) cm. broad in the upper part, oblanceolate or spathulate to linear with a broadened base, acute to acuminate or cuspidate, recurved with undulate margins, more densely pubescent below than above, the inner ones 0.7–0.9 (1.3) x 0.7–1.2 (1.4) cm., sagittate to triangular or rhomboid, acute or acuminate, with a claw 0.7–0.9 (1.3) cm. long, erect, ± connivent, setose-pilose towards the apex, pubescent towards the base. Stamens 1 mm. long, oblong-cuneiform. Ovary c. 1 mm. long, globose or conic, glabrous except the stigmas. Fruit 5–7.5 x 4–4.5 cm., obovoid or ellipsoid, finely rugose, not ridged, mottled green and white, glabrous (? or shortly pubescent), pendulous, on an elongate pedicel 6–8 cm. long. Seeds 2–2.5 cm. long, bean-shaped, smooth, reddish-brown.