undershrubs or shrubs, rarely small trees. Leaves simple or lobed, ovate,
usually cordate. Flowers axillary, solitary or in terminal racemes. Epicalyx
absent. Calyx campanulate, 5-lobed. Corolla campanulate, yellow, orange-yellow
or white. Staminal column shorter than the petal, with many antheriferous
filaments. Ovary with 5-40 locules, style 1, branched at the apex, branches as
many as carpels. Fruit a schizocarp, mericarps reniform, dehiscent. Seeds 2-9
per mericarp, reniform.