Gigantic trees. Leaves usually of moderate or rather small size for the family, usually membranaceous and more or less pubescent, entire or inconspicuously cren-ulate, usually not congested at the tips of the twigs. Flowers rather small, in terminal panicles. Hypanthium obconic. Calyx deeply 6-lobed to subentire, not accrescent, vestigial in fruit. Petals 6, subequal, usually pink or rose. Androphore strongly bilaterally symmetrical, produced into a prominent, posterior hood spirally involute then reversely revolute, wholly staminodial and concealing the rather few minute fertile stamens of the central disc. Ovary 3-celled, containing numerous basal ovules; stigma sessile or subsessile, minutely 3-radiate. Fruit a mediocre subcoriaceous narrowly campanulate dehiscent pyx; seeds several, basal, very thin and broadly winged, the embryo subcentral.
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