Capsule usually linear or narrowly ellipsoid, siliquiform, not or ± constricted between the seeds, rostrate, smooth, with irregular loculicidal dehiscence.
Calyx-tube cylindrical, hairy within near the base and usually with 5 tubercles above the insertion of the stamens.
Annual or perennial, caulescent or acaulescent herbs, puberulous to hirsute and often also setose.
Stamens with subhypogynous filaments, usually 3 longer and 2 shorter; anthers oblong, dorsifixed.
Ovary 1-locular, many-ovulate, with parietal placentas; styles 3 with entire or lobed stigmas.
Inflorescences scapose or axillary, of 1-many-flowered racemes; bracteoles single or paired.
Leaves sessile or shortly petiolate, not or ± divided, usually exstipulate.
Seeds numerous, straight, reticulate-foveolate, with 2-pored pits.
Flowers erect, shortly pedicellate, homostylous or heterostylous.