Herbs, annual or perennial (unscented). Stems sparsely or profusely branched; glandular-pubescent, viscid. Leaves: stipules absent or minute; petiole without pulvinus distally; leaflets 3. Inflorescences terminal or axillary (from distal leaves), racemes (flat-topped); bracts present (pedicels green to purple, glandular-pubescent). Flowers slightly zygomorphic; (receptacle prolonged into gland adaxially); sepals deciduous, distinct, equal; petals unequal (adaxial pair larger); stamens 8-32; filaments inserted on gynophore, (unequal), glabrous; anthers (ellipsoid), not coiling as pollen is released; gynophore ascending in fruit. Fruits capsules, dehiscent in distal 1/2 , cylindric, oblong. Seeds 12-65, globose or subglobose, not arillate, (cleft fused between ends). x = 10.