Cucurbita foetidissima (Missouri Gourd)
Family: Cucurbitaceae (Cucumber)
Missouri Gourd is a large, sprawling vine found primarily in southeastern Colorado. Leaves are large, triangular and upright. Flowers are yellow-orange. Fruits are the size of baseballs. While Missouri Gourd is a native plant, it appears weedy as it grows in disturbed areas and along roadsides.

Vegetation zone:  Plains (3500-5500 ft.)
Time of bloom:  June - August
Origin:  Native
Eastern Colorado Wildflowers