Bushy shrub, 0.3-2 m tall, ?lignotuberous. Branchlets patchily appressed-pubescent with colourless hairs at flowering. Leaves narrowly elliptic to obovate, shallowly concave, undulate towards margins, 2.7-8.5 cm long, 6-20 mm wide, narrowly attenuate at base, spinulose-dentate, acute to acuminate; longitudinal veins 1-3, prominent above and below; secondary venation reticulate, prominent. Inflorescences 1 or 2 per axil, with 14-20 flowers per raceme; pedicels glabrous. Perianth white to pink. Pistil 4-6 mm long; gland vestigial or absent. Fruit obliquely narrowly ovate, 1.7-2.3 cm long, 0.8-1.1 cm wide, usually beaked. Seed obliquely ovate, 12-15 mm long; wing extending unevenly fully or partly down both sides of seed body, sometimes notched near base, black.
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