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Plant Form: Creeping annual herb.
Size: Up to 2 m tall.
Stem: Cylindrical, rough, green.
Leaves: Alternating along stem, up to 8 cm long and wide, nearly hairless upper, hairy to bristly below, deeply lobed.
Flowers: Small, yellow, inconspicuous to 6 mm diameter, in clusters of 2-4.
Fruit and Seeds: Green to yellow elliptical melon, occasionally striped or mottled, with soft and often hooked spines.
Habitat: Grassy areas, open woodlands, roadsides, streams.
Distinguishing Features: Similar to Afghan melon (Citrullus lanatus) which has larger fruit (up to 15 cm diameter) without spines, and also larger brown seeds.
No national or state profiles have yet been added for this weed.