Family: Polygonaceae
Synonym: Fallopia convolvulus (L) A.Love.
Common name: Black bindweed
Ecol. & Biol.: Annual climbing herb,
Root: tap root.
Stem:slender, branching, trailing on the ground or twining around plants, 20-250 cm long, angular, almost hairless, green or -reenish brown.
Leaves: alternate, 1-2 cm long and 0.5-1 em wide, bluish green, arrow shaped, pointed at tip and indented at base, leaf stalk cylinderical upto 4 em long with a stipule sheath where it joins the stem.