Stem erect, up to 120 cm long, puberulent to subglabrous. Leaves 6-10 x 2.5-5 cm, ovate to ovate-lanceolate, subglabrous to pubescent, specially on veins and margins. Petiole 5-11 mm. Flowers 6-15 clustered in leaf axils. Calyx 1.5 mm long, lobes linear, pubescent. Corolla glabrous within, white, yellow or greenish. Corona lobes sessile. Follicles 5-7.5 cm x 8 mm, fusiform, acuminate, glabrous.