| The genus is characterized by the strongly vertical head with the anterior third or so projected upwards and weakly to distinctly deflexed over anterior pronotal margin. |
| We suspect that like those of Urania, they are then deflexed. |
| Fruits deflexed, dehiscent, oblong, subterete or tetragonal in cross section, ovoid in one species, coriaceous. |
| The spines are stout, all deflexed, and arranged along the edges of the numerous ribs into which the stem is divided. |
| The flowers are white or pinkish, becoming brown and deflexed as the corolla fades. |
| They have a thick, consistently inflexed flower stalk in contrast to the remaining members of Petunia, which have a thin, deflexed flower stalk in the fruiting state. |
