Trees up to 10 m. tall, or apparently sometimes more than twice as tall (ac-cording to Von Wedel), the leafy twigs relatively stout. Leaves rather narrowly obovate-oblong, obtuse or rounded to abruptly and obtusely acuminate, broadly and obtusely cuneate, 13-35 cm. long, 5-15 cm. broad, coriaceous, glabrous; petiole about 1-2 cm. long. Inflorescence racemose, several-flowered, the peduncle stout and glabrous, less than half as long as the subtending leaves. Flowers rela-tively large, about 3.5 cm. in diameter; calyx lobes broadly ovate, acute, about 6 mm. long, greatly accrescent in fruit but retaining their coriaceous texture and only weakly adnate to the base of the pyx (according to Pittier); petals oval-obovate, about 2 cm. long, rather unequal, yellow. Fruit (according to Pittier and the cited illustrations) "7 cm. in diameter and about 6 cm. high, depressed-globose, thin-walled, rather smooth, with persistent sepals becoming twice larger than in flower", the subhemispheric operculum nearly twice as deep as the body of the pyx, not conspicuously contracted at the orifice.
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