Young twig, petiole, midrib and nerves beneath persistently shortly cream pubescent; leaf bud and stipule outside long fulvous tomentose, the hair tufts becoming separated widely and partially caducous on the expanding stipule. Twig 1-1.2 cm ø apically, becoming uneven and thinly flaky, terete. Bud to 5 by 1.5 cm, narrowly conical, obtuse. Stipule to 10 by 2 cm, narrowly lanceolate, obtuse. Leaves 20-38 by 12-23 cm, broadly ovate; base obtuse; apex obtuse to shortly acuminate; nerves c. 20 pairs, prominent, well spaced, at 45°-60°; petiole 4-6 cm long, stout, prominently geniculate. Raceme to 21 cm long, terminal or axillary, terete or slightly compressed, long golden-brown caducous tomentose at base, more shortly so distally; usually unbranched. Flowers remote, distichous; bud to 5 by 2 cm, large. Calyx and corolla typical, calyx glabrous. Stamens c. 40, longer than style; filaments c. 1/2 as long as anthers; anthers linear, tapering; appendage to connective as long as anther or slightly longer, slender. Ovary ovoid-conical, shortly pubescent; stylopodium 2-3 times as long as ovary, shortly pubescent the apex excepted. Fruit subsessile. Calyx tube to 4 by 3.5 cm, globose, glabrous, with 5 obtuse tubercles in the apical half, terminating abruptly at the c. 2.5 cm ø neck; 2 longer calyx lobes to 18 by 5 cm, oblong, obtuse, tapering abruptly at the to 1.2 cm broad revolute base, untwisted; 3 shorter lobes to 1.5 cm long and broad, broadly ovate, base subcordate, apex obtuse, revolute with the 2 halves back to back.
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