| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|
| Cucurbitaceae | Citrullus amarus | Citron Melon | Disturbed areas. | Native of s. Africa. See Barger et al. (2019) for details on the record from Montgomery County, AL. | 
|
| Cucurbitaceae | Citrullus colocynthis | Colocynth | On ballast, presumably only a waif. | Native of w. Asia and Mediterranean Africa and Europe. | 
|
| Cucurbitaceae | Citrullus lanatus | Watermelon | Gardens, fields, trash heaps, commonly cultivated in home gardens and commercially, sometimes volunteering from seed the following year. | Native of n. Africa. | 
|