Nicandra

Robust annual, erect, much-branched, +/- glabrous herb. Leaves membranous, coarsely sinuate-dentate or almost lobed. Flowers solitary, on slender pedicels. Calyx 5-partite, much enlarged and inflated in fruit, prominently 5-winged, scarious-membranous; lobes cordate, subsagittate, wide, conniving, reticulate. Corolla widely campanulate; limb very shortly or obscurely 5-lobed; lobes or folds very narrowly imbricate. Stamens 5, arising near corolla base; filaments filiform, dilated at base into a pilose scale; anthers ovate-oblong; thecae parallel, dehiscing longitudinally. Ovary 3-5-locular; style columnar; stigma oblong or subglobose, 3-5-partite, lobes conniving; ovules many. Fruit a globose berry, much shorter than the enlarged calyx. Seeds suborbicular, compressed, minutely scrobiculate; embryo near margin, much curved; cotyledons semiterete. x = 10.