Bur cucumber

Sicyos angulatus

Bur cucumber (Sicyos angulatus) is climbing or draping weed often found in woods, along streams and roads, and in shady, damp places. It is less common than wild cucumber as its range is limited to the southwestern and southeastern corners of Minnesota and along the state's western border.
Its slightly fuzzy vines can reach lengths of 15-25 feet. Bur cucumber leaves are more circular in shape than the wild cucumber and more closely resemble cultivated cucumber leaves with three to five shallow lobes. Its flowers range from white to green. Male flowers form loose elongated clusters on long stems; female flowers are found in round clusters at the ends of short stems. Fruits are borne in clusters of three to ten. Each fuzzy, yellow fruit is only about 1/2 to 3/4 inches long and about 1/4 inch thick, and covered with prickly bristles. Inside each fruit is a single, flat, egg-shaped seed.

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