Annuals, biennials, or perennials [subshrubs]; eglandular. Trichomes stalked to subsessile, forked, stellate, or dendritic [simple]. Cauline leaves petiolate or sessile; blade base not auriculate [auriculate], margins entire, dentate, or lobed. Racemes ebracteate, elongated [not elongated] in fruit. Flowers usually actinomorphic, rarely zygomorphic; sepals spreading or erect [ascending], lateral pair seldom saccate basally; petals white, lavender, or purple [pink], claw present, obscure [distinct]; filaments unappendaged, not winged; pollen 3-colpate. Fruits silicles or siliques, dehiscent, unsegmented, terete, latiseptate, or angustiseptate; ovules [4-]16-250[-numerous] per ovary; style distinct or obscure; stigma entire. Seeds biseriate or uniseriate; cotyledons accumbent or incumbent.

Genera 5, species 39 (2 genera, 6 species in the flora): North America, Mexico, Central America, South America.

Lower Taxa

• Halimolobos Tausch
• Pennellia Nieuwland