The following is a list of cultivated species which at least some of the time possess this spot-character.
The upper part of the calyx splits off transversely from the base.
| Family | Species | Comment |
| Solanaceae | Datura ferox | |
| Solanaceae | Datura inoxia | |
| Solanaceae | Datura metel | |
| Solanaceae | Datura stramonium |