Unarmed annual, biennial and perennial herbs, ± hairy, often viscid. Lvs alternate, simple, entire to pinnatisect, sessile or petiolate. Fls in bracteate spikes or racemes. Calyx campanulate proximally, tubular distally, strongly veined, accrescent; teeth 5, regular, becoming spiny at fruiting. Corolla ± broad-funnelform, dingy purple, yellowish or whitish; lobes 5, patent, emarginate to obtuse, sometimes somewhat zygomorphic. Stamens 5, inserted at base of corolla, usually slightly exserted. Stigma capitate. Capsule circumscissile, enclosed in swollen campanulate 1/2 of calyx. Seeds numerous, small.