Fallopia dumetorum Fallopia dumetorum Fallopia dumetorum

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Black Bindweed

Fallopia convolvulus

  • Name also: Climbing Buckwheat, Wild Buckwheat, Bearbind, Cornbind, Black-bindweed
  • Family: Dock Family – Polygonaceae
  • Growing form: Annual herb
  • Height: Twining stems usu. less than 1 m (3.3 ft.) long.
  • Flower: Regular, 2–3 mm (ca. 0.1 in.) wide. Perianth consists of usu. 5 greenish segments arranged in two whorls. The three segments of the outer whorl are papillose and rough, have pink or white margins, and lack a dorsal wing. Flower-stalk and perianth grow after flowering. Carpels 2 or 3, completely fused. Stamens 8. Flowers in whorled group-like cymes.
  • Leaves: Alternate. Stalked, both sides rough but hairless. Blade triangular, arrow-shaped, 2–8 cm (0.8–3 in.) long, pointed, and the basal lobes usu. acute. Stipules fused into a membranous stem-enclosing sheath (an ochrea) that is situated above the point where the leaf-stalk is attached.
  • Fruit: Three-angled, black, granular, winged achene, remains enclosed by the perianth. Node near the end of the fruit-stalk.
  • Habitat: Fields, gardens, roadsides, disturbed ground, rubbish tips, and rock outcrops.
  • Flowering time: July-September.

Black bindweed is an annual, and often a troublesome weed. It prefers dry mineral soil. When the plant finds a stout support it starts to twine, first anticlockwise, later clockwise. The seeds of this species were formerly used as food. Humans are their most efficient dispersers.

Copse Bindweed

Fallopia dumetorum

Black bindweed’s southern look-alike, copse-bindweed can be distinguished by that its outer perianth segments have a dorsal wing and they are smooth, the leaves are more triangular, and the stem usually smooth.

Other species from the same family

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