Leaves simple (includes Sterculiaceae) Malvaceae
Androgynophore present. Flowers unisexual, more than 10 mm long. Sepals petaloid, petals absent. Epicalyx absent. Anthers 2-locular. Trees. Brachychiton
Androgynophore absent. Stamens fused into a column around the style, free or slightly connate at base. Flowers usually bisexual, if unisexual then petal present and less than 5 mm long. Epicalyx present or absent. Anthers 1 or 2-locular.