biennial or perennial herbs, subshrubs or shrubs. Stem erect or prostrate.
Leaves alternate, exstipulate, simple, entire or variously pinnately dissected,
petiolate or sessile. Inflorescence ebracteate or bracteate racemes, corymbs or
panicles, or solitary on long pedicels from axils of rosette leaves. Flowers
bisexual, hypogynous, actinomorphic. Sepals 4, in 2 decussate pairs, free or
rarely united. Petals 4, alternate with sepals, arranged in form of a cross.
Stamens 6, in 2 whorls, tetradynamous. Ovary superior, sessile or borne on a
distinct gynophore, 2-locular and with a false septum connecting 2 placentae,
parietal, 1-many per locule, style 1, stigma capitate or 2-lobed. Fruit
capsule, siliqua or silicula, dehiscent or indehiscent, or schizocarpic,
lomentaceous or samaroid. Seeds uni- or biseriately arranged in each locule.