Slender, tall tree, up to 30 m high, with flaky reddish brown bark. Leaves oblong, ca 8—12-nerved, 7-16 by 3-7 cm, with rounded-obtuse to acute apex, rounded to obtuse base, and entire to slightly undulate margin, glabrous. Petiole 1.5-5 cm long, with up to 7 mm broad, linear-lanceolate wings; wings caducous except often a small, up to 5 mm long, upper part, remaining as 2 small auricles below the blade. Raceme 1-3-flowered, up to 11 cm long. Flowers ca 8-10 cm diam. Sepals 5, the outer 2 ca 17-19 by 15-17 mm, the inner 3 ca 25-30 by 20-24 mm. Petals narrowly obovate, yellow, ca 40 by 16 mm. Stamens in 2 distinct groups, the outer ones ca 225, 8-10 mm long, straight in bud, the inner ones ca 28, ca 18 mm long, with their apex reflexed in bud; yellow. Carpels 6-10, ca 8 by 3 mm, with linear, red, 16 mm long styles; each with 8-11 ovules. Fruit unknown.
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