Small to medium-sized tree 2–12 m. tall, with crooked bole and gnarled spreading branches forming a ± rounded crown; bark grey, ± rough, fissured.. Leaf-blades rounded oblong, very broadly elliptic or almost round, 6–12 cm. long, (4–)5.5–9.5 cm. wide, rounded or retuse at the apex, truncate to rounded or subcordate at the base, ± densely hairy above or at least with persistent scattered ± long simple and fasciculate ± tubercle-based hairs, concolorous or discolorous, not floccose-tomentose beneath but with simple hairs on the venation, closely reticulate, the areoles glabrous or covered with small stellate hairs and with scattered yellow glands; petiole (1–)1.5–2 cm. long.. Inflorescences axillary, cymose, lax, few-flowered, 1–6 cm. long; axes densely woolly-pilose.. Sepals ovate, 3–5 mm. long, 3.5–4 mm. wide, adpressed often reddish silky-pilose.. Petals white or reddish, 9 mm. long, 4 mm. wide, densely silky.. Anther-connectives produced into an oblong or triangular lobe at the apex.. Fruit 1–1.5 cm. in diameter, densely adpressed pubescent; wings straw-coloured, brownish or purplish, 2.5–5(–8) cm. long, 1–3(–3.5) cm. wide, pubescent.
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Related to M. magnificus Gilg but leaves without additional glands in the axils of the lateral nerves on the upper face, and not floccose-tomentose on the lower surface, with a general tendency in the Zambezian region to be smaller (6–12 × 4–10 cm.); petiole thin and relatively short, 1–1·5 cm. long.
Flowers and fruits also generally smaller.