Triplochiton

Large trees with a straight bole and light grey smooth flaking bark. Leaves palmately 5-9-lobed, cordate; lobes ovate to oblong; petiolate; stipules present. Flowers bisexual, in reduced axillary cymes or many-flowered panicles; bracts present and also 3 bracteoles forming a deciduous involucre beneath calyx. Calyx campanulate with 5 valvate lobes. Petals 5, with contorted aestivation, tomentose, with a basal claw. Androgynophore conspicuous. Stamens many; staminodes 5, ovate, with a contorted aestivation. Ovary of 5 coherent carpels and with 5 coherent styles; ovules +/- 12 per carpel, 2-seriate. Fruit of 5 samara-like, single-seeded carpels each with a unilaterally produced wing.