Herbs annual. Stems erect to ascending. Basal leaves forming a rosette, petiolate. Stem leaves alternate, short petiolate or sessile. Flowers solitary, in axils of upper leaves, 5-merous. Calyx parted nearly to base; lobes linear-oblong, slightly enlarging with age. Corolla white or pink, salverform; tube slightly longer than calyx, not constricted at throat; lobes imbricate in bud. Stamens included, adnate to middle of corolla tube; filaments very short; anthers subovoid, apex obtuse. Ovary globose; style short. Capsule subglobose, dehiscing by 5 valves.
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