Unarmed annual, biennial or perennial herbs, glandular-hairy. Lvs alternate, simple, entire to sinuate or pinnatifid, sessile or petiolate. Infl. a few-flowered open cyme; fls on long peduncles, in the axils of, or opposite to, uppermost lvs. Calyx 5-toothed, tubular. Corolla funnelform, of various colours, often bicoloured; tube narrow-cylindric, widening to the broad throat; lobes 5, spreading. Stamens 4, didynamous, included; staminode 1. Stigma entire or 2-lobed. Capsule oblong to ovoid; valves 2. Seeds small, numerous.
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