Shrub or small tree, up to 12 m, 13 cm dbh. Twigs very densely patently hairy. Axillary buds ovate-oblong, (1.5-)2.5-5(-6) mm long, densely hairy. Petiole c. 4-7 mm, very densely hairy. Leaf-blade 11-31 by 3-9 cm, base cordate, covering upper side of petiole, apex acutish; above green, dull, hairy on the midrib; midrib distinctly sunken, rarely flat, secondary nerves and intramarginal nerve faintly sunken, rarely slightly prominent, venation little prominent; beneath glaucous-papillose, pubescent all over, secondary nerves c. 9(—12) pairs, forming a distinct intramarginal nerve; glands very numerous, scattered, c. 0.1 mm diam. Inflorescences unbranched, shorter than to as long as the leaves or sometimes with one side-branch at very base; axes very densely brownish patently pubescent (most hairs 0.5-0.8 mm long); flowers often turned upside-down. Pedicel 5-7 mm, very densely brownish hairy (hairs up to 1 mm long); pedicels of flower buds at first curved downwards, of open flowers turned upwards and often half-twisted, rarely straight, pedicels of fruits curved downwards again. Sepals very densely brownish pubescent outside (hairs up to 1 mm long); outer sepals 3.2-3.8(-4) by 2.7-3.2 mm; inner sepals 3.2-4.2(-5.6) by 3.2-4.2 mm. Petals pink, the upper ones with a yellow spot, when dry dark reddish, the longest one 13(—16) mm; carina glabrous to sparsely appressedly hairy outside along central veins; other petals glabrous except for a few hairs at base, sometimes sparsely ciliate in basal part. Stamens: filaments free or 0.1—0.5(—1.5) mm connate; anthers 2.2-3 mm long, faintly hairy at base, ciliolate along slits. Ovary patently hairy; ovules 11-16. Fruit globular, c. 1.5 cm diam., densely hairy; pericarp rather thin; sepals subpersistent in fruit.
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