Sicyos angulatus,[1] the oneseed bur cucumber[2] or star-cucumber is an annual vine in the gourd family, Cucurbitaceae, native to eastern North America.

[3] S. angulatus is native to Ontario and Quebec in Canada, and the eastern and southern parts of the United States as far west as North Dakota and Texas.

[2] It grows in fertile, moist habitats such as floodplain areas, damp grassland, thickets, bushy places, river banks, ditches and field verges.

[3] In Europe the oneseed bur cucumber was introduced as a ornamental plant during the 18th century; the first report of its naturalization in Germany dates back to 1835.

[4] Nowadays Sicyos angulatus is considered an invasive species, quite difficult to control because its seed bank can last in the ground for at least three years after the destruction of the aerial part of the plant.

The species tend to spread along river banks, where it finds the better ecological conditions for its growth, but recently it can also be found alongside road and field edges.