Annuals or perennials, stolons absent or present. Stems glabrous or hairy. Racemes: bracts absent. Pedicels present; bracteoles present. Flowers: calyx campanulate to funnelform, lobes lanceolate to slightly ovate; corolla purplish to violet and white or white with throats usually spotted yellow, abaxial lobes 3, forming a prominent, projecting lip, adaxial 2; abaxial throat lined with clavate trichomes; stamens: filaments glabrous, anthers often loosely connate in pairs. Capsules obovoid. Seeds: wings absent. x = 20.
Introduced; e Asia, introduced also in Central America, South America, Europe, Africa, Australia.
Species ca. 33 (2 in the flora).