Aduseton Adanson, nom. rej.; Koniga R. Brown.
Herbs annual or perennial, sometimes subshrubs. Trichomes exclusively malpighiaceous, appressed. Stems erect or decumbent, branched basally and above. Leaves all cauline, shortly petiolate or sessile, entire. Racemes several to many flowered, ebracteate, elongated in fruit. Fruiting pedicels slender, ascending or divaricate. Sepals ovate or oblong, erect or spreading, base of lateral pair not saccate. Petals white or creamy white, rarely purple; blade ovate, spatulate, obovate, or orbicular, apex rounded; claw strongly differentiated from blade, shorter than sepals. Stamens 6, spreading or suberect, slightly tetradynamous or subequal; filaments dilated at base; anthers ovate, obtuse at apex. Nectar glands 8, in pairs, median pairs longer than lateral ones. Ovules 2-14 per ovary. Fruit dehiscent silicles, ovate, obovate, orbicular, or elliptic, latiseptate, sessile or shortly stipitate; valves papery, veinless or with a distinct midvein; replum rounded; septum complete, membranous, translucent; style to 0.6 mm, cylindric; stigma capitate, entire. Seeds uniseriate or biseriate, winged or wingless, ovate or orbicular, often lenticular, strongly flattened; seed coat reticulate, mucilaginous when wetted; cotyledons accumbent.
Four species: Macaronesia, Mediterranean region, one ornamental species introduced and naturalized worldwide.
