Herbs, shrubs, or subshrubs, annual or perennial. Stems sparsely branched laterally; puberulent, glabrous, or glabrate (scabrid when dry). Leaves: stipules minute tufts of filiform hairs; petiole without pulvinus (equal to or longer than leaflets); leaflets (1 or) 3, (conduplicate). Inflorescences terminal, racemes (dense); bracts usually absent; (pedicels 3-5 mm, glabrous). Flowers: zygomorphic; sepals usually persistent (eventually deciduous), distinct, equal; petals slightly unequal (in pairs); stamens 6 (well-exserted, ± equal); filaments inserted on gynophore, glabrous; anthers (oblong), coiling after dehiscence; gynophore reflexed in fruit; (pistil 2-lobed basally, style filiform, eventually spinelike). Fruits schizocarps, indehiscent, obovate, (reticulate, ± tuberculate, valves disarticulating from persistent, round septum). Seeds 2(-4), globose, not arillate. x = 10.